TMI warning!! W/ pics!!

Okay so this is SUPERRRR gross but I'm really concerned. I've been having this weird discharge for a week or so now, it doesn't smell bad or itch or hurt or anything but my discharge has never looked like this and no matter what I do to switch up my hygiene routine nothing seems to make it go away... any ideas what this could be? The color varies from a milky white to a pale lime yellow color. No new changes in my sex life and from the last check there was no sign of any sort of STI ... I'm at a lost right now.