Missed my period

Hey girls I wanna check. I have missed my period for a month now and I don’t know what to do! My periods are always late but not this late. I had sex with my boyfriend a month ago, but we did use a condom. I didn’t even have any pregnancy symptoms at all. Instead, I felt cramps in my abdomen, exactly where I would feel if my period were to come. Is it just a hormonal thing or I may be pregnant? Help!