My boyfriend and I had sex last week. We used a condom

It was his first time and we went missionary

While pulling out, the condom came off till the tip of his penis.

He finished in the condom only.

My period is due today. I'm cramping a lot, which happens normally before my period

Other symptoms that may be worth noting, I have no discharge and I'm not tired or anything. No urge to pee or cravings

I'm an overthinker

My cycle is fairly regular off by a max of 2-3 days and I always cramp after sex

I haven't really exercised a lot during the lockdown

Can somebody please please help me out and tell me whether I have a risk of being pregnant?