Cramping but late?

Ok so I’m one day late, I know that sounds like nothing but i am NEVER late. AF shows herself bang on date usually around 10am and she’s not arrived....yet. Although I’m feeling quite crampy. My son was conceived whilst I was on contraception and I didn’t even know I was pregnant till I was 10 weeks gone so I can’t remember feeling crampy at all. My question is, has anyone experienced cramping around AF but gone on to have a BFP that month? I wanna take a test but I don’t wanna get my hopes up!