Yeast infection

So I went to the obgyn mid December, everything came back - from A to Z. I have been single from April 2019 to November 2019 then I met this really handsome guy and we just hit it off! When we have sex i always use a condom, safe sex is Great sex as they say 😅 but my issue is from November till January I have had 3 yeast infections, now I understand that anything can throw off you PH balance of your vagina, but I have never had this happen before! Never had issues with my last BF (always used condoms) could there be a chance that he got something from someone and gave it to me?

(also no I'm not dirty I shower 2 times a day, never wear my underwear for very long either and I was my clothes every other day)