what to take to balance out my ph?

We’ve been ttc for almost 10 months I’ve always had problems with yeast infections, also had bv about six months ago which was treated by my doctor but i now came to realization that I think it has to do with my ph since I’ve always got vaginal infections, I bought ph strips took one today it said my ph was at an 8 which is alkaline...I bought boric acid suppositories haven’t used them yet, I just need some tips here on what I can take, whether i can order it online or I need to see my doctor for it..

Currently have been taking a prenatal/probiotic, a vaginal health probiotic, 2 folic acid supplements, a yeast guard vitamin I bought from rite aid last week and now I have these boric acid suppositories, am I taking too many vitamins do you think?😩