What is this ?

So I am on the pill and have unprotective sex with my fiancé for 3 years now . Just starting a few days ago every time I sneeze or cough I get this pinching pain like in my ovary on the left side . I have a cold and I know that messes up your bc but i dont know if I could be pregnant or not I work night shift so it is hard to take it on the right time so god only knows I could get pregnant . But I'll quit rambling has anyone had this pain ? Was it a pregnancy thing or a ovarian cyst ? It has lasted 3 days .