tmi bad smell

okay so i’m on my period & there’s a very unpleasant smell down there.. i just went to get checked at the doctor and had a pelvic inspection about two weeks ago because i was having this problem & i thought it was bv, they gave me meds for it but a week later they called me & said i have nothing. The smell went away after i got the meds & now its back. I’m very clean i shower every day and use water down there no soaps or anything. I already scheduled another appointment for my gyn but i was wondering has this happened to anyone else? or is it just normal since i’m on my period? please no rude comments