i’m about to give up on sex.

i have a very sensitive coochie. i noticed that i had a pattern of having yeast infections/BV if the guys i slept with were weed smokers so i just stopped talking to guys that smoke (if they smoke then eat it or spit on it i got BV or a yeast infection the next morning). recently i started seeing a new guy. i slept with him for the first time on friday night and woke up with a slight fishy smell. it went away after i showered but later that day i could tell i was developing a yeast infection (wasnt fishy but she was definitely baking bread) his hygiene is top tier, doesnt smoke weed, has clean fingernails, only uses sensitive unscented soap down there, etc. but i still developed a yeast infection. i was so upset i lied and said i started my period cause i was too embarrassed to tell him i had a yeast infection. i already took a yeast infection pill but im scared its gonna happen again, im gonna try it out after she gets back in tip top shape and see if it happens again. i feel so defeated. me and my ex slept together constantly, he always finished inside me, he vaped, etc but it never upset my coochie. i want it to work with this guy but im scared our bodies aren’t “compatible” btw we both got tested before sleeping together so its not STDs/STIs. idk what to do.