So I had my period January 25-29. On january 19&26 & February 2&7 I had unprotected sex & he released in me. Been getting crampy period like cramps and some back pain like when I get my period since February 5th on and off . my period is expected in 13 days from today which is February 22. Was wondering if these cramps could have to do with ovulation or something or if it could possibly mean I could be pregnant.