IS THIS NORMAL? SOMEONE PLEASE ANSWER!!

So I have 8 days till my period starts. I think I feel normal but there is this weird tightness in my stomach and I'm bloated. I'm on birth control and the last time I had sex was January 1, 2017, and I also started my period two days after. Am I normal or is there a baby inside me right now? (I hate that early pregnancy symptoms and period symptoms are so similar, it's irritating that I can't enjoy sex without having to worry all the time.🙄)