Pregnant ??

Hannah • 16 years old, have been with my SO for 6 months now, he`s my life <3
Had sex 2 weeks ago the condom broke on the outside near my vigina had a lot of pre cum I'm on birth control but I was off them for an extra week the month before. I usually get my period Wednesday but yester day I had little bleeding but nothing else since and I'm really crampy is this a sign ??