I have to say i dont think hair has anything to do with thrush or anything like that but i do find that not having any it feels cleaner (lol)

I have been getting waxed (all of it off) since DD was about 1 and even though im pregnant i still go get waxed, my waxer knows me very well and she gets all the bits (like ingrown hairs) that i cant see cause of my belly.
I warn it may be awkward at first for those who are sensitive or shy (i was both at first but now it doesnt bother me) i mean you are laying there with no pants on but its no worse than if you were at the docs.
So if all else fails try getting waxed. It lasts so much longer as well, when i shaved it wold be 5mm-1cm after a week getting waxed it is like that after week 5
If yours in the S.E Subrubs of Melbourne go to Tantilise at Fountain Gate and ask for Kelly, she is awesome and she will make you feel very welcome.
Good luck to all.