Hi Cloudlessskies
I took the MCAT January 29th 2010 and had my baby February 27th 2010. So i feel obligated to give you my advice, being that i took the MCAT at almost 9mos pregnant, and studied for the test during my entire pregnancy. I think it would be best not take it during the first trimester, if youre anything like me, and plenty of other women, you really are exhasuted during the first trimester. Now, i also dont recommend taking it during the end of your third trimester, unless you are truly 100% determined to stick to your test date, as I was. I did wonderful on the test, but it was a challenge. At the time i was having extreme back pain, and nervousness topped with the urge to pee every 15 minutes was a true challenge.
SOoo my suggestion is to try to take in the second trimester or early third. But everyone is different, the best advice that i can give you, is to do whats best for you.
I am in my first year of med school now, so I also can give you advice on the sacrafices that you will have to make as a mother med student.
Good Luck
~Haleemak~