I'm sexually active and I have a yellow discharge that I feel coming out and it as a unpleasant odor and it itches and vagistat 1 didn't help so what could it be I'm frightned of the possibilites

You need to be screened to STD's immediately.

Yes and it is enough reason to be at least concerned. Since you have chosen to be adult enough to have sex, now you have to be adult enough to go to the doctor for an exam.