This has been going on for a while now but I have some weird white-ish vaginal discharge and I guess it somewhat resembles cottage cheese. Sometimes it's yellowish greenish. And then some other times it's jelly-like and stringy and I honestly have no idea what's wrong. It's embarrassing during sex because usually when I engage in sexual intercourse, the white-ish cottage cheese like discharge gets on my partners member. An ex once called it "mayo" and it was just so embarrassing.

I'm really not sure what to do about my situation and I really hope it's not some STI or something..

If anyone could please help, it would be greatly appreciated.
Thanks.