Is it normal to be afraid of and for the women doing the pedicures?

It's normal. My main concur with those places is whether or not they properly sterilized their equipment, but I think the thing that worries me the most is waxing. I read somewhere that STDs and other infections can be harbored there. Think about it, there's usually one stick that they put in the wax and then slather on their customer's part
(genitalia and other places) then the stick goes back in and the process repeats itself. It's things like that that make me glad I'm not the kind of person who likes that stuff. As for your "infections" I'm guessing it's fungal and there are natural treatments you can try. However, not all "infections" are fungal, some are build ups of "K-something". No-nex (I think that's how it's spelled) and white Iodine might help. The Iodine has worked the best for me in getting rid of whatever it is I have. If you get it, get the white as the regular one can stain things and remember it's NOT safe to digest so, if you have pets DON'T let them consume it.