i had sex for the first time in september and haven't had it since, we used protection, but i've been feeling really tired,feeling sick,sore boobs,craving random foods, getting pains in my ribs,and sharp pains where you usually have period pains and my stomach keeps bloating up and i keep having a weird feeling in my stomach, my last period was heavy but i had really bad pains before it started and keep getting them pains randomly since september i've have 4 periods, i've been told to do a pregnancy test but if i was pregnant i'd have a big stomach and not having periods what do i do?