Slimy discharge, unpleasant smell, cramping?

my boyfriend and I have had lots of unprotected sex in the last 3 weeks... Around 4 days a week and 2 or 3 times a day. My last period was July 27th to the 30th and spotty on the 31st. We had sex 2 weeks after my period and I've heard thats when you're most likely to get pregnant. I've been having cravings for food, bad cramping on my lower abdomen area, I've been peeing about 4 times a day, and I've been having lots of weird discharge. Some of my discharge is white and sticky and some of it is clear and slimy. I've been Having an odor down there and I normally don't smell at all. I just started my period today, which is about a week before I should've started. I'm also having severe cramps and ive been getting annoyed really easily in the past couple weeks. Could I be pregnant? What does all this mean??