Fertile stage of cycle

FH

So I’ve had sex wit my bf while using a condom then we had sex on my period which was my heavy stage while using a condom he said he ain’t cum or bust in it and I didn’t see a hole in it so idk I’m just scared now RIR

But I’ve been having symptoms of upset stomach cramps a lil headache a Little farting bloating and yanning of tiredness and a lot of burps could I be prego or I should be alright