An STD Help Community

I'm not quite sure if I have an STD or not. I'm sexually active with my boyfriend and don't use condoms very often and a few days ago I started to have this yellow smelly fluid come out of my rectum every so often. The fluid isn't thick like discharge and I don't have any bumps or cysts like that and it doesn't hurt to go to the bathroom. Also, nothing "funny" is coming out of my vagina, but I'm not exactly sure why there's that little fluid that gets passed from there. I know my body pretty well but I have no idea what is going on and is embaressing to discuss face to face. PLEASE HELP

That is an odd and uncomfortable symptom. I would talk to a health care provider about it as there's no way to diagnose that over the internet unfortunately. Many times it could be a bacteria that can be treated quite easily but if not could cause serious complications over time.