Green vaginal discharge. I be worried?

Hi! I’m 20 years old and I’ve been having pale green (almost looks like it’s fluorescent) vaginal discharge that comes and go (sometimes it’s normal for a few days) for the past 4 months approximately. I don’t think there is a bad odor. At first there was also some itching of the pubic area, but not anymore and now I don’t think I have any other symptoms. I’ve only had sex twice with two different boys (first one was 10 months ago and the other one was end of April and the condom broke this time). And i’ve had like non-complete sexual intercourse with the last same boy since February. I’m also on the pill (yasmin) but i tried the patch from January to beginning of March so I thought it was because of the patch at first but it did not stopped when I switched back to the pilI I was taking before. Should I be worried? Thanks!