NEED OPINIONS

Okay I want yalls opinion. So I am sexually active, and I have protected sex once a week usually . I was on my period the 8-14th and we had sex twice. And we decided I think about the 10th to have sex without one to see how it would feel and he pulled out like 20 seconds before he even finished. Keep in mind I’m on my period. It’s now the 18th and I have a constant urge to pee and I’m getting acne on my chin when I only ever get acne when I’m about to start my period but I just got off. Also I’ve been wearing my mask all day and I just discovered this acne so maybe it’s from my mask. But I do have a constant urge to pee or like just an uncomfortable feeling in my bladder and down there. Every time I pee it doesn’t relieve the feeling. What do y’all think. Is there a large chance of pregnancy from that one moment of unprotected sex. I know theres always a change but I had already ovulated for my period to start and I usually know when I ovulated again bc my breasts get very tender. Help me ease my mind and what do I do abbt this constant urge to pee it’s annoying!!!