Do i need to go to the doctor 😭 this is so embarrassing

so every time I’m about to get my period, about a week before my butthole starts to itch. And this time I think my butthole is seeping or something, I’ll go to the bathroom and there will be poop on my thong.... and when I’m on my period it hurts to poop.... 😭😭 and I have never done anal or anything that would make it do this