It was late December of my senior year in high school and I had just turned 18. My boyfriend Mark, a year older than me, invited me to one of secluded mountain bike trails in the woods between the high school and the airport. We rode for an hour, and then took a break at his place. Mark embraced me, and that was when he finally noticed that I was not wearing a bra underneath my tank top. I thought that he might have noticed sooner, since I am not exactly small at a 34C. As I pressed my breasts against him, I felt his member get firm. I pulled back briefly not expecting his reaction, and then my reaction was a bit unexpected as well, as I became aroused and felt a bit of dampness in my shorts. I gently felt his rod as he kissed my deeply. Now I was getting wet.
I then took off my tank top, as he gazed at my ample, somewhat perky breast. We lied down on his bed, and he started to suck on my breasts and reach into my shorts and start to finger fuck me. I was now extremely horny, I wanted him.
"Mark, take off your shorts. I know you have a boner."
He took them off. It was the first time I had seen a penis. He already had a bit of pre-cum on the tip. I felt it, gently stroked it and found it rock hard.
"Debbie, do you want to suck it?"
"No, the thought of oral sex kind of grosses me out." I was about to say that I wanted it inside of me.
I took my shorts off and pulled him on top of me.
"Mark, finger me some more".
"Debbie, are you looking to have sex?"
"Yes"
"You're a virgin."
"Now, yes."
"I don't have a condom."
"That's OK."
He fingered me some more, bringing me to an orgasm. Then he was on top of me, as I spread my legs. I felt his rod against my lips as he started to enter me. I felt a brief pain, like something popped.
"Ouch!"
"You OK? You want to stop, or keep going?
"It's OK, you just popped my cherry. Well, I'm now longer a virgin"
He continued to enter me, giving me feelings of intense pleasure, not like anything else. Even my most intense masturbation sessions didn't feel like this.
Then it hit me. No wonder why I am so horny, I'm just a few days short of halfway through my cycle. And I've never been on the pill, and I'm unprotected. I'm minutes away from being a teen mom. My sister was a year older than me, and had her first baby just before she graduated, and I am going to wind up looking like her. As Mark continued to thrust into me, bringing me toward the peak, I had to tell him.
"Mark, you need to know, I'm almost halfway through my cycle. I'm fertile, I'm close to ovulating."
"What, Debbie?