What the F is going on with my body?!?

My last period was August 27. September 8 me and my boyfriend had some crazy sex haha and he came in me (we weren't thinking). I've been having a lot of white discharge, my tits have been killing me, about two weeks ago I came down with what I thought was a flu and body aches, I had what I thought was implantation bleeding about two weeks ago, and I'm bloating like crazy (as you can see in the pic below). I'm bloating so much that people have asked me if I'm pregnant. But I took a hpt three days ago and it came out negative. Is it possible it was wrong and I am pregnant? It was a Life brand test.

Excuse the mess, I live back and forth at different places and was unpacking. I'm 5 foot 4, and weigh about 115 lbs so this is not normal to have a stomach like this for 3 weeks straight. This is not me pushing out at all. If I push out it looks huge! I've gone from a size 0 in jeans to a 4... whether im pregnant or not I just wanna pull my hair out with how frustrated I am with my body. Should I be worried??

UPDATE:

I took this pic a few hours ago and I'm sucking in as much as possible. I sent it to my friend who's been pregnant and she said she thinks my stomach looks too high, and that hers was lower near her hip bones. Opinions?