Help???

Okay ladies, so I had sex with my boyfriend on 4/28, it was unprotected, and I didn’t realize it was the day of my ovulation. It’s the first time we had unprotected sex, and I have been getting these weird long white strings in my urine, not white small specks, but long white strings. I have no pain while urinating, no back pain, no stomach pain, regular urine color, no smell, just no symptoms at all everything is normal. The stringy guys stopped for like a day and came back. No he didn’t finish in me, and it was only unprotected for about 3 minutes all together. What is this?? I’m thinking either BV or UTI bc you don’t need to have symptoms to have those things but idk.