I have had a retroverted uterus with all 3 pregnancies (and in between, I assume). It has caused the whole trouble peeing issue every time, right around the 12-13 week mark. It's been the worst this time, actually, my 3rd pregnancy - I woke up once last week at night and just could not start the flow of urine. I did knee-chest position on the bathroom floor, didn't help...then I laid on my tummy with a pillow under my hips in bed (basically, like knee-chest but warmier and cozier!) and after about 20 minutes I was able to pee (while leaning completely forward on the toilet with my hands on the floor
). Around this point in pregnancy, the uterus is still back in the pelvis and it starts crowding the other organs, hence reducing/cutting off the bladder's ability to empty. RARELY the uterus grows big enough without moving up that you find yourself unable to void your bladder at all...this requires a trip to ER to get a catheter and possibly have some manipulation to help the uterus move up. At least, that is what I have been told by the ultrasound tech (at my first ultrasound with first baby), an ob/gyn friend, and my midwife.
Some things I've found helpful:
-drink lots and pee often - for me, the peeing problem is the worst when my bladder gets super full. At the peak (last week), I was setting my alarm to wake up every 2 hours to pee at night....going longer than that seemed to lead to getting stopped up.
-spend some time each day in knee-chest position (get on all fours, then drop your forehead to the floor and relax your tummy muscles to make room for the uterus to fall forward)
-sleep on your side, angled forward a bit if you can
I am going to be 15 weeks tomorrow and just in the last 2 days, I have felt the whole thing resolve. And as an added bonus, I am feeling lots of baby movement