Hi all, I got an iud 6 months ago and got a new bf. We’ve had unprotected sex but I never thought to get an STD test. Today when I pulled my underwear down to pee, this was on my underwear. Does this look like an std or could it just be my uterine lining shedding. I touched it so it looks chunky now but it originally just looked like a big clump similar to the one at the top left. PLEASE GIVE ME FEEDBACK YALL!