When Makayla asked whether she had experienced a period in the past few days, Diana suddenly realized that she had made a serious miscalculation. A better explanation was that she had figuratively buried her head in the sand. On the night when she had her unexpected date and chance for sexual intercourse with Otis Rainey, she had no trepidation of a possible pregnancy outcome as a result. Aside from being aroused to engage in sexual activity, she was pretty sure that she was due to start her next menstrual cycle within a few days. In fact, the same did start the following morning.
That particular period, like most of her periods, was uneventful, free of any distress or discomfort. Consequently, it did not register in her mind that she was experiencing the beginning of a new menstrual cycle, save and except for remembering to wear tampons and or pads for the following few days. Her blood flow ended shortly after her first meeting with Makayla, where the latter intimated the possibility of a forthcoming exciting sexual adventure. Then Makayla proposed the gangbang orgy, and in accepting, Diana forgot that she had recently started her period.
She naturally had no inclination to keep track and maintain a calendar of her menstrual cycles. She simply knew the obvious facts, that she would have a period roughly every four weeks, and when those four weeks went by, it was a no never mind event. She had acquired a prescription for birth control pills before she started college, but because of her Navy commitments, for convenience, she ceased taking them with the idea of resuming later when she would acquire a serious boyfriend. In that mindset, Diana did not envision the possibility of any spur of the moment one night stands. She believed she was much more disciplined than to succumb to such temptations. Considering her Otis Rainey encounter and her gangbang participation, she was mortified to discover that her character was not as steely solid as she was wont to believe.
When Makayla had proposed participation in the gangbang orgy, and she had accepted, Diana had forgotten the actuality of the onset of her latest period. In her mind, as she had reiterated to Makayla, it had been some time since her last period. Thus, she believed her next period would start either before the orgy, or doing the orgy or just afterward. So eager was she in acquiescing to participate in the orgy, that the possibility of having sex during her period was not an anathema to her. She rarely had a heavy discharge of blood, so if there were bloodstains on the penises of her partners as a result, surely it would be no big deal to wipe it off. In any case, considering the scope of the orgy, she knew that none of the men would want to perform cunnilingus on her or for that matter, anilingus either. Even on that point, she made a miscalculation, as evidenced by the antics of Brad Winters and Johnny Cooper.
Since she didn't experience the onset of a new menstrual cycle before or during the orgy, she believed she was on solid grounds to expect its commencement within a few days after the orgy. It wasn't until Makayla asked if she had experienced her period by this time, that Diana suddenly remembered exactly when her last menstrual cycle had actually begun. So she realized that the orgy had occurred during the fourteenth day of her cycle, which meant it happened right smack dab in the middle of her ovulation, hence her initial reaction to Makayla's question.
The latter was determined to ascertain Diana's apparent concern, so she asked, "Oops? What do you mean by oops?"
Having gotten a grip on her nerves, Diana replied, "I realize now that I've miscalculated my cycle. I'm not due for my next period until the end of next week or within a couple of days after that."
Of course, as a nursing student, Makayla was quite aware of the significance of that last fact. She stated the obvious, "Why, that would mean you must have been ovulating when you were fucking at the orgy!"
"Yes, it would appear so."
"And you said you did not take any birth control precautions."
"That is so, but as you know, there are many factors that are in play so that there is still a good chance that I might not have gotten pregnant. In any case, I've learned my lesson, and will get birth control protection before I fuck again. In particular I'm going to be fitted with an IUD so I won't have to worry about taking a pill everyday. "
Makayla replied in a metaphor, "Here's hoping then that, that horse had not escaped before you close that barn door."
"Amen!"
The next day was the Thanksgiving holiday. The extended Van Buren family, except for the oldest daughter Abigail, were present for the holiday dinner. The latter had notified the family she would be present for the Christmas holiday. Barbara was present, accompanied by her newly acquired boyfriend who subsequently became her husband. Everyone had a wonderful time except Diana. The apprehension that she may be pregnant weighed heavily on her mind, preventing her from normal enjoyment. She wanted to confide her dilemma to Barbara, but as her sister had become besotted with her date, Diana had no success in gaining her attention.
She took it as a good sign that she had not thrown up after the huge holiday meal, but she knew enough that it was too early to expect morning sickness. So the next week, she was on pins and needles as she was hoping against hope that her new menstrual cycle would commence the following Saturday right on schedule. Luckily she had loads of school work to attend to and exams to study for, to defuse her worries. When the fateful Saturday, marking the twenty-eight-day since the start of her latest menstrual period arrived, she had not spotted. She had stuck in a tampon during the night, but there was no presence of blood when she removed it.
There were no discharges of blood the following days, either. Then she threw up for the first time at her weekly school lunch with Makayla. No words were exchanged between them, but having ruled out the possibility of food poisoning, each had a good idea of the reason for Diana's sudden nausea. Removing any doubt from Diana's mind was her awareness of unusual soreness developing in her breasts. So she scheduled an on-campus clinic appointment on the last day before the Christmas break to officially confirm her suspicion. Sure enough, Diana was pregnant, and her due date was calculated to be the eight day of August next.