Uti or pregnancy

So my period ended on the 8th I had unprotected sex and I noticed probably 2 days I started having light cramps as if I were pregnant and I’ve literally had cramps every since and I feel an urge to pee but only a little bit comes out and it’s like no matter what I drink my pee is kinda clear like a very light yellow. Any ideas??? I keep thinking I hope he didn’t get me pregnant on purpose and didn’t tell me🙄