Was going to start this thread myself today. I'm 13 weeks and I feel it's only going to get worse as baby presses more on my bladder. I basically feel like I always need to go and I'm sick of getting up twice a night already.
Boo hoo. Poor me. And I'm still sick every morning and now I've started getting headaches.
Also cystitis is quite common in pregnancy (cranberry juice does the trick) so keep an eye on extra urination for other symptoms. But the fact that you are having horrible pregnancy symptoms is great if you are worried about the pregnancy. I found constant vomiting very reassuring when I was carrying DS as I'd also had a MC very shortly beforehand.
I've read that it's because, although you're not showing yet, your uterus does expand quite a bit to accomodate the growing baby. In the second trimester, your uterus ascends above your pelvic bone and outward, giving you a bump, but in the first trimester, it's still within the pelvic cavity and it crowds your other organs, including your bladder which makes you have to pee more often.
No problem Mrsbabookaloo and thanks about the name!
I just looked it up and apparently, a non-pregnant uterus is the size of a plum. At 6 weeks it's roughly the size of an egg, at 8 weeks a small orange and at 10 weeks a large orange. So it's probably about 4 times its size by the time your first trimester is done. No wonder your bladder is squished!
Your uterus is low down in your pelvis in the early stages, and therefore presses on your bladder. As it expands it rises out so that in the second trimester, you don't have to go so often, and then when the baby gets bigger and there is less space, it starts to press on your bladder again in the late stages. So it's normal but it will get better in the middle.