Should I worry?

Im 8w 2d and when I wipe there’s pink discharge. Now usually I’d be wigging out but under the circumstances I’m not sure if I should be worried or not. Since Tuesday I’ve had 3 vaginal ultrasounds, a pelvic exam, they’ve checked my cervix, and I was diagnosed with a UTI. On top of that my fiancé and I had sex twice today. The second time he had to stop because it was so painful. We’re worried that after being on the beach we somehow got sand in my vagina and it scratched it. Disclaimer: we did not have sex on the beach. This was afterwards but I had quite a bit of sand in my bathing suit when I took it off. Should I be worried or should I not worry unless it gets bright red?