Could this mean anything? Help please.

Lily

So I dont know if i am being paranoid or if something is going on, the last time I had sex was 2 months ago, ive had two periods since then but, I'm gaining weight and my stomach is growing even though ive kept the same diet, I've also had some pretty bad pains that I've never had before. We did use protection everytime, but I'm wondering could this mean anything?