Questions!!!??!!! Help.

So last week I was asked if I was pregnant, I told her no and she kept reassuring me if I was sure. I told her maybe but who knows cause I'm irregular. She then told me I was glowing. Well I took a test it was BFN. Didn't think nothing of it honestly. Well a couple days went by and my boobs littearly started hurting. Not too bad, though. (Didn't think anything about it). Then cramping started, my lower abdomen and into my vaginia. Stopped within a day in a half, I assumed I was just going to start my period. Nope everything started getting worse, my boobs started getting bigger, getting hard, and hurting from touch, I started to get light headed, dizzy, can barely walk from it. Everything I smell is going off the wall, my food taste are going different. I have 3 other kids and I never had these symptoms before. Not sure what's going on. I was much younger (teenager, and now I am married to a man who doesn't father my kids), so I don't know if symptoms are different cause I'm older and I have a different person.. sorry if it doesn't make sense. I'm just trying to think if I need to go to the doctor, if it might be something worse. I took a test this AM and it was a BFN..