It was months ago, but it's made me insecure

Okay. so....probably quite a few months ago I was 4-5 months PP, still nursing my lo at the time. My husband and I were doing the deed one night (I was on top) and I didn't have a top or bra on and when I finished I didn't realize I had lactated and his chest got all wet. now being a first time mum breast feeding,lactating, sore nipple, everything was foren and made me feel insecure as I slowly got used to the "new normal" . when it happened I got so imbarassed and played it off like "lol that'll happen with a release of oxytocin, same hormone when baby nurses"🤓😎 cool right 🙈 lol anyway he told he thought it was kinda hot. so I felt better about it happening ( but still obviously keepin that private moment between us). well then a couple days later im sitting around my table with him and my sister and he lightly bring it up. he mentions lactating and gives me a look and says "did you tell your sister about it?" and I said "Umm NO, why would I!" (shes sitting there not to sure whats going on but doesnt care enough to ask) thank god. and he processed to tell me he told his friend in his company , a 5 guy company. and he was all weirded out by it. and when I brought it up the first time making a point i was not impressed about him sharing that with a guy he works with and i see at work bbqs, he blew it off and just said "he wont remember" i didnt say anything further because i was kinda shicked and was suprised there was no apology i felt so shared, that was a privite moment between us and he shared it openly and not even an apology, basically an oh well. I have problems initiating sex to begin with but now I feel like if i were to try and do anything different it'll get shared at his work between the guys. I have a 1 year old and am 5 months pregnant. i think we've had sex maybe 3 times in the last couple months(he initiates). I think about it a lot and I'm sure if i initiated it it would happen way more often, but i feel like I've lost so much trust but i feel like it was so long ago that it shouldn't be a problem now. and yet it feels bigger then ever and its gotyen so bad im feeling uncomfortable cuddling with him ans being affectionate. and it makes matters worse is he sleeps in the other room cuz the 1yr old is in our bed with me. we're starting sleep training mext week to get her back in her crib ans now own room. but i just feel strange about the whole situation. im a private person and i feel like he broke that. it may seem like im overreaching but im a private person and i thought something i feel so private about and comfortabble with him. that that was between husband and wife. 😔 Thoughts ladies?. i just needed to get it off my chest