So confused

April 7th I had unprotected sex with this guy that I really liked. He had always said that no matter what happened he would stay by my side and I trusted him. I thought I was pregnant so I told him and he stopped talking to me so I decided to tell my mom and she was very understanding about it.

Now here is where I get confused, At the end of april I had what I thought was my period so my mom and I stopped talking about the possibility. Now (I would be 5 weeks pregnant) I just don’t feel right like something is different or something (I don’t know how else to explain that) and my boobs especilly my nipples are extremely sore I have also had a little abdominal cramping with no spotting or blood with some bloating that doesn’t go away no matter what. I took hpt’s and they were neg. but i’m still so confused.

PLEASE HELP. I drink alot of caffine and don’t want it to effect anything.