Confused .

I've been on my birth control pill for about two months I say , and I always use condoms , on Saturday  I finished my pill & had unprotected sex I used the pull out method , I was cramping as if I was gonna start my period since Thursday yesterday I had unprotected sex again and used the pull out method , now I haven't had any signs of my period coming since yesterday before sex ? Should I be worried ? As in pregnancy ?