How Can I Get Back Healthy Ph Of My Vagina?

I recently went to the gynecologist and was treated with antibiotics for a vaginal infection. I was also told that I could use rephresh to help insure my vagina was a good ph level which would combat any possible bad tastes or smells for which I was concerned because I just enetered into a relationship with a new guy and want to be healthy, smelling and tasting good. I completed the antibiotics, took the extra pills (cant remeber what it was called at the moment) one at the beginning and one at the end to combat a yeast infection from the antibiotics. Used rephresh after having sex with my boyfriend, noticed a few days later that there was a white discharge coming out of my vagina. I looked at it closely and smelled it and it did not have a foul smell at all. But I assumed that I had a yeast infection so began a one day treatment of monistat, then read that one day might not be strong enough and might just make the bacteria more resistant so I purchased a three day and started that. Then read that rephresh will result in leaving a whitish discharge from the vagina as the cells slough off and it is nothing to worry about. I am afraid I may have treated a yeast infection when I did not have one. So I just rinsed out my third day of treatment of monistat with hot water and tried to clean myself out thoroughly, so I am not continuing with a unneeded chemical. I m wondering should I use rephresh again now to make sure I get my vagina back to a healthy ph before I see my boyfriend this weekend?