What should I do?

Okay so I know it's normal to get a decent amount of discharge, but I notice today it was alittle bit green. I searched it up and I have had sex without a condom recently so I'm kinda nervous it's like a sexually transmitted infection or something. Is it normal to like get alittle bit of color sometimes? I dont know what to do, this is also kinda embarrassing to say but I trust you guys. What should I do?