Skipped period

Asshhllyy
My period didn't come this month! & I'm scared! I had sex on the 19 he said he didn't cum at all while doing it raw. He doubt's that I could be pregneat. But then after he put a condom on and I saw him cum in the condom. But he swears he didn't. I'm nervous. I've been getting cramps here & there but nothing..