i wont let him go down on me

so my entire sex life…only been of 5 years, i have only let two men attempt to go down on me…my first boyfriend ever…which ruined me from ever letting a guy do it again, but two years later i got into a serious relationship of 4 years, and let him try…and he didnt like it. i went to the gyn and they said the my pH level was off causing an untasteful flavor persay, and this has been this way my whole life. well now im in a new relationship and im too self conscious to let him go down on me because i know he is going to be disguisted like the rest. i dont get it, im soo hygenic. i dont use douches(they told me not to). tried doing things to balance my pH. its still an unpleasant sweaty odor and i know its gotta taste nasty, even right after the shower. soo frusterating, and im so self conscious. and i bet no one else goes thru this…