I'm having a bad problem with a strong fishy smell during sex with my boyfriend. Sometimes its so bad that it turns us both off afterwards. Plus its VERY embarrassing! Sometimes it doesn't smell... sometimes its horrible... and other times you can still smell it but its not to bad. Recently I had my yearly check up with my Gyno... everything came back NORMAL! I got the works too... I got them to test me for all STD's and HIV. I also called my gyno the other day to ask her about this. I talked to her nurse and not her. She said it could be bacteria from his penis making the smell and for both of us to use antibacteral soap... or it could be just our smells mixing together(pheramones?) <--spell check*. So we both used the antibacteral soap... but it still had that smell but not to bad( It was also at the time when my period would be starting if I had it every month but because of endometriosis I only have 4 or 5 periods a year)
Could it have something to do with not having a period every month? What can I do to make this stop? Please help me figure out what is causing this.

BTW I havent had this problem with other partners that ive had before my current boyfriend.