I never had to use the suppositories, but when I was a young child I had A LOT of vaginal problems. I had yeast infections and bladder infections constantly, probably from the time I was potty trained until the time I was about 13 or 14. Only it took the drs a few years to figure out what was really going on with me. Finally they tested me for food allergies and we found out that this was what was causing most of the problems. So when I was about 6 or 7 my parents took me to an allergist/immunologist who specializes in dealing with yeast and fungal infections. He was my savior. I still go to him on occasion. But anyway, to make a long story short he immediately put me on a regimen of boric acid as well as PURE oral Nystatin. Being that I was so young, I guess he thought it would be cruel to make me get a vaginal suppository. He had my mom get boric acid powder and mix it with warm water. Then I would lay on the bed and lift my legs up into the air and she would kinda "pour" it in! (It sounds terrible now that I think about it! How embarassing!) She was and is a wonderful mother! But anyway, I guess maybe because it was liquid it actually gave me some relief from the itching and burning upon contact. Pretty soon we started using it more often, and it really really helped. When I had a yeast infection, since I was allergic to all of the other products out there we would get the Nystatin capsules and dissolve them and do the same thing. Now that I am big (22!) I just insert them whole if I have to! When I got older and didn't want mom to do this anymore I started making a compress out of the boric acid solution and sorta holding it there for a few minutes. That helped also.
I know this has probably been a little gross to read (as it has been very embarassing for me to type!) but I only posted this in hopes that I could help someone else. Yes, the boric acid suppositories will definitely help to balance the PH. It just may take some time. Also, howcome you weren't using any lubricant? Did the dr tell you not to use any sort of lubricant when using the boric acid suppositories? It's harmless to use some lubricant, as far as I know. Unless of course, the lubricant irritates you. I find that a bit of vaseline also works well, but if you like the KY Jelly then definitely stick with that.
I hope I've been helpful,