Tips on surviving the field and being a female?

So ive been in the Army for a while now (4 long years) and i have a problem. Every time I got to the field my PH balance is thrown off! I usually get really itchy and get yeast infections. Obiously I sweat alot in the field. I wear pantie liners and change my underwear at the end of the day. I even have a squirt bottle I take to the port a potty to rince off my vag. I also take over the counter probiotics while im out there. I had to learn all this the hard way.....so ladies is there anything else i can do while im out there? I went 5 days with no Shower and I came back really irritated down there. I have to take showers everyday to wash my body or else I get itchy. Idk if its possible to get some kind of profile for that? Also im going to NTC soon and I'm so scared. I get so stinky and itchy that its so uncomfortable to walk.😤😭😭😭 and me being a female I cant just tell the male sergeant that my vagina is getting irritated from the sweat and not showering. Im trying my best here. Ps sorry this is kinda long.