So I have this problem..

Hello ladies. So to start off, I've never had this problem before. I've been sexually active since I was 16 and I have had multiple partners over the years. I would use contraceptive but at times, I would slip up (you know those stupid, drunk nights) Anywho! I've been tested about a year ago and I came out clean but at the beginning of the year; I had two of those drunken slip ups and wasn't protected. I am now in a committed relationship and my partner and I have already became intimate. The thing is though... he wouldn't stay hard! At first I thought he was gay and then I thought it was because he wasn't attracted to me. I had finally had enough of it and asked what was the problem! He wouldn't tell me until I pestered him enough and his answer was humiliating. He said I smelled sometimes!! I was mortified because I never had that problem. He also mentioned it wasn't horrible but obviously it was enough to not keep it up. My self esteem went down and I did NOT want to have sex. To add, I don't have any signs of unnatural discharge or symptoms of an sti.  I bought a natural soap and slowly, my smell went back to normal and I was happy! We began to have sex once again but, one day the smell came back while we were in bed and I cried my eyes out. I've been washing appropriately and my smell is back to normal but I want it to stay that way. So please ladies, does this happen to you?? Is there extra steps I can take to keep the smell at bay?? I need answers, thank you!! 💜💛