Not really trying, but wondering it if happened this month?!

I had an D/C on December 23rd, 2008 for a missed miscarriage, at 11 weeks, then I had severe complications and ended up in the trauma room and back in surgery on the 26th of December. They told me it could be very difficult for me to conceive but I wouldn't know for sure until I tried. Truthfully I haven't been "trying" very hard b/c I don't want to be let down, and I'm terrified of something happening, but I really do want to be a mommy. So I haven't been not trying either, I figure if it happens it happens. Anyways, my LMP was on april 3rd, and I'm expecting to get it again on May 3rd, however for the past two days i've been running to the bathroom constantly b/c i have to pee so bad, and my boobs are pretty sensitive its like I just cant get my bra in a comfortable place, its driving me nuts, so I'm wondering if it happened this month, wondering whether or not AF is coming is driving me crazy!