i don’t understand what’s happening w my vagina

so i’ve recently been having reoccurring yeast infections since april 2018 when i got my first one. i got what i thought was another in beginning of january but made a doctors appointment went and was diagnosed with bv, bacterial vaginosis instead of a yeast infection. i did the medications completed it. been feeling fine and hadn’t had sex for a week after completing the meds. well not last night but the night before i finally had sex with someone i’ve been talking to and wanting to have sex with but been waiting since what was going on with my flora. but now it’s the second night since i’ve had sex again and i already feel like i have a yeast infection. it was unprotected but i don’t understand like is it always guys giving me this? is it me too? i don’t understand i’ve never had sex with this person and i don’t know if they’ve had sex recently so it’s possible that it could be from him but i don’t know i feel like it’s me because of what’s been happening. what do i do. i’m literally so upset i’m crying i hate my vagina i feel like i haven’t been able to have sex in months without questioning if i have a yeast infection.