2 days late?

A
Typically I'm 28-29 day cycle. However it is now day 31. Haven't had normal period symptoms however haven't had symptoms similar to my last pregnancy. Took a test this am and it was negative. Spotted only once today. Having some cramping but more like gassy cramps. I put a tampon in just incase (my sheets are white) but wtf!? I've never been two days late.