We, my wife Jen and I, are sitting in our doctor's office waiting while the doctor reviews the latest tests on Jen's pregnancy.
The doctor looked up.
"I am concerned that you are so long overdue with no sign of anything happening soon."
Concerned, Jen asked, "Is everything OK."
"Yes, don't worry all is well. It is just that it is quite unusual for someone to be so late."
He paused, deep in thought before continuing.
"If you are willing, there may be a way to speed things along."
"If you think it will help, what is it," Jen replied.
"First I have to ask a very personal question."
Jenn looked at me for confirmation and nodded OK.
"Have you had any sexual activity lately?"
I could see Jen blush.
"No, we stopped a couple of months ago. We didn't want anything to hurt the baby."
"OK," the doctor continued. "We are in partnership with a research group investigating the effects of the female orgasm on the birthing process, specifically if the orgasmic contractions have any effect on triggering the birthing contractions."
"You would be a perfect subject for this study if you are willing to participate."
"What does it involve?'
"Let me assure you that there is nothing sleazy about the procedure. It is carried out in the surgery here under controlled conditions. That way the results can be verified."
"A nurse will stimulate you with a vibrator under controlled conditions. The length of time you take to orgasm will be measured as well as following up to see if the orgasmic contractions stimulate the baby's birth."
Before getting pregnant Jen had been very adventurous in bed so I thought she would probably agree.
I spoke up, "At this stage I am quite worried about how late she is and if Jen is OK with it then I think we should try it."
I looked at her for confirmation.
She seemed a bit concerned but said OK.
"That's great," the doctor confirmed.
"We can do it now if you have time. It will just take a few minutes to set up the room and organise the nurse, if that is OK?"
"OK," confirmed Jen.
We were shown back to the waiting room and about 10 minutes later shown into another consultation room.
Everything looked quite clinical including the table with the stirrups.
We sat waiting until a nurse breezed in, "Hi, my name is Sue," but suddenly stopped dead looking at both of us.
Sue had been my girlfriend before Jen.
"Hi," she said taken aback and consulting her notes.
"You are here for the birthing procedure?"
"Yes." I replied.
Glancing from me to Jen, she continued, "Look I didn't realise it was you two. I am happy to do the procedure, but I will understand if it makes you uncomfortable and you want another nurse."
I looked at questioningly Jen.
Jen and Sue were acquaintances but had never been close, especially after I had hooked up with and married Jen.
"No, it's OK," Jen finally said. "I just want to get this over with."
"OK, thanks," from Sue. "If you would just lay down and place your legs in the stirrups, just like a normal obstetrical exam."
While Jen made herself as comfortable as she could, Sue retrieved an industrial looking vibrator from one of the drawers.
Jen had on a very loose pregnancy dress which she pulled up above her thighs.
"Can you remove your underwear or would you like some assistance?" she asked.
"Yes I will need some help thanks."
Sue stood between her legs and while Jen lifted her hips, gently pulled her panties off.
"Do you want your husband to stay?" Sue asked.
"Yes, I would rather he stayed, thanks."
With that Sue sat on the roller chair and rolled in close between Jen's legs.
At the sound of the vibrator being turned on I couldn't help but take a peek at my ex-girlfriend gently applying the vibrator to my wife's pussy lips.
It had been so long since we had fucked that the sight immediately got me uncomfortably hard as I continued to watch.
I have never really been into girl on girl but the sight was more arousing than I could have imagined.
Sue had clearly done this many times before as she seemed to know exactly how to work the vibrator while maintaining a professional attitude.
I, on the other hand, was still as hard as a rock and needing quick relief.
Unfortunately, the procedure did not go as planned.
Although Jen was moaning and her muscles were spasming, the orgasm seemingly would not come.
After some time Sue stopped and looked up.
"Sorry, the vibrator does not seem to be having the desired effect."
"Do I have your permission to try something else?"
"Yes," Jen replied.
"I am just going to touch you with my fingers. Please let me know if you feel uncomfortable."
I leaned in to see what Sue was going to do.
I saw Jen jump slightly as Sue reached in with both hands and gently spread her pussy lips.
I could see that Jen was very wet and I could smell her arousal.
Sue leaned forward and her tongue flicked out to stroke Jen's clit.
Jen started to rise in surprise but as the feeling of the tongue on her clit hit her she moaned and lay back down.
I could not believe what I was seeing, especially when Sue looked up. She looked me directly in the eyes as she continued to lap at Jen's pussy and clit with her tongue.
Within minutes Jen had clamped her legs against Sue's head to keep her in place.
Jen motioned me to come closer.
She reached out with her hand and began to stroke my rock hard cock through my jeans.
I couldn't look away from Sue working on Jen's pussy.
"Unzip," she whispered.
I duly unzipped my jeans and Jen slipped her hand inside, grasping and then stroking my cock.
Sue must have seen this as I heard her moan also.
"I'm going to cum," I soon whispered.
With that she increased the speed of her strokes.
My knees sagged as I shot spurt after spurt into my underwear.
Jen quickly withdrew her hand and began to convulse in her own orgasm.
After a couple of seconds, she pushed Sue's head away and collapsed back on the bed.
Sheepishly, Sue stood up.
"My apologies. That was very unprofessional of me. I hope you won't report me."
I was still in shock over the whole scenario but Jen managed to reply.
"No, thank you. I really needed that after all that time with the vibrator. Let's keep this between ourselves."