Try colloidal silver. You can get it at the health food store. It is rather expensive but it works.
Also Vit C, garlic, and zinc taken together 4 or 5 times a day will clear up the run of the mill infections, but silver is for the really nasty things that won't go away.
Take probiotics to repopulate the gut of the good bacteria as antibiotics kills it all, good, bad, and indifferent.
Marsha