Periods, Pregnancy, Sex.

Basically I had sex like a couple of days ago. First of all I had sex with a condom then the second time I didn't and I think there was still sperm from when my boyfriend cumed but he told me that he wipped his dick and he washed it properly but idk I don't believe it, because my belly started to hurt and my periods were 2 days late, I just had them and i don't know if I'm pregnant or not.