I think I screwed up my PH level in my Vaginal area :/ PLEASE HELP!!! (May be T.M.I!!!)?

So I had a yeast infection & it was itching like crazy "down there." We can rule out any STD's because I don't have sex..But anyways...So I was reading on the internet where a woman advised using hydrogen peroxide to ease the itching as well as clear up the infection. So I did like 3 days ago. Good thing is the itching DID stop, but 3 days later I noticed that I had like a clear, slight, brownish discharge from my vagina. I'm due for my period week after next, so I'm guessing maybe this could be like ovulation discharge or something like that. I also have no foul smelling odor coming from down there it's just the discharge that I'm kind of worried about. Please help me! I'm like seriously freaking out!! Did I do something wrong by putting peroxide down there? I didn't even really put it inside I just held it to the opening of my vagina with some tissue...Should I have done this?