Vagina odor

I’ve noticed that every time my boyfriend cum in me his sperm throws off my ph balance so he stop , but slipped up this one night (which was late March early May , I can’t remember when exactly) ever since then I’ve been having odor !! 😩 I used monistat, boric acid cause I thought I had a yeast infection (ever since I had GD it became very easy for me to get yeast infection) but that didn’t do anything , I use unscented soap , I don’t douche . I recently went to the Gyne and he ran test for yeast infection , BV , trichmoniatrist (idk how to spell it) Chlamydia and ghonnerhea and nothing was detected in all of the test ! Like WTFFFFF !!! I don’t take probiotic . I don’t really eat healthy (I do eat a lot of snacks) did anyone experience this ?