anyone else have this problem?

For a few months now I keep having a milky discharge. Doesn't smell bad but doesn't smell like me. I've been to my doctors. Got an antibiotic shot and antibiotic pills. Had a UTI and a yeast infection. It cleared up for a week. Then right after I got off my period the discharge is back. Any suggestions on what I can do since the doctors say nothing serious is going on. Is it just a yeast infection that keeps coming back?