Maybe TMI

I had our son 7 months ago and my boyfriend told me that ever since I had him that sometimes I smell bad down there. Not always but sometimes (he might’ve just been trying not to upset me too much lol). I’m wondering if it’s from breastfeeding? My IUD maybe? He makes comments about it quite often lately and says he’s joking most of the time but it’s making me not want to be intimate at all. I can’t feel good about myself in bed when i know something like that is happening it makes me not even want to be touched or next to him. It’s just my discharge, not the whole area because it happens even directly after a shower. I personally can’t smell it and have no other symptoms so I don’t think it’s an infection