What’s wrong with me??!?

Less then two months ago I missed my period twice, I was so scared that I might’ve been pregnant....I took multiples home test but all came out negative. I decided to go see my ob. Did blood test came back neg. Dr said that my nuvering can cause this type of things. I was supposed to have my period 17 days ago and I still didn’t get it. Some days I’ll see a tiny spot of blood other days nothing. Me and My bf of 3 years have been sexually active and we do not use condoms....I’ve been bloating, farting like crazy (sorry guys, just wanted to be specific on my symptoms) I am peeing a lot, spiting, I feel like shyt. Like this afternoon on my way to work I felt like I was going to throw up.....what’s wrong with me.