Yellow Discharge, No Smell

Hello,

I’ve been dealing with this on and off for about the last two years. I am in a low income family and we do not have insurance to see a doctor. Every month or every other month I get yellow discharge and an extreme itching sensation that I scratch which then causes scratches on the tissue and that just makes it worst. It has absolutely no smell what so ever which makes me think it’s not a yeast infection. I have tried yeast infection medicine over the counter which doesn’t seem to make it go away. Has anyone else had this happen? Thanks in advance!

PS I am sexually active with my partner of 3 1/2 years and I am 19 years old.