Tmi question with photos

Hey ladies last month for like 3 days had a greenish colored discharge, like it looked like I blew my nose (tmi) and it went away, about two weeks ago AF came and I haven't had any weird discolored discharge since last month so I kinda blew it off, well today it started again *sign* I'll post photos but they don't really do justice to how green it really is. Any ideas what this might be?

I have an appointment with my gyno in less then a week and I plan on talking to him about it then.