might be pregnant. extremely worried

my period is 5 days late. i had sex last time 2 months ago, in january. I had my period last month, i’m on birth control and i was messing up for awhile back, and thought it finally got on track when i got my period last month. but now my periods late? I tested last month before my period and it said negative, i haven’t had sex since than, but why’s my period late? Could i be pregnant still and not have any symptoms at 2 months??? i’m really worried please help