Husband subscribed to women on snapchat

So we’re on the younger side but have been together 6 years. We have a 2 year old and I am 20 weeks pregnant now. A while back my husband was subscribed to a whole bunch of girls on Snapchat who posted like half naked pictures and pics in their underwear. (which is completely free and you can subscribe to anyone who has an account). Not that it matters that it’s free but it made me uncomfortable cause these can just be regular girls like you and I who post those things publicly. So I told him to remove all those girls. He looks on the Snapchat map a lot cause that’s the only social media he has and that’s how he finds them. Well I saw that he was subscribed to another girl 2 days ago. It was only 1 but again, she’s posting pics of herself in a bra, literally bent over in her underwear and it just hurt. Especially bc I’m pregnant and obviously don’t look how I used to. So I told him it makes me feel insecure when he wants to have sex cause look at the bodies and women he likes to look at, clearly not me or what I look like. And I guess I’m conflicted on how to handle the situation because he makes it seem like I’m overreacting and idk if I am or not. He thinks it’s not a big deal, am I being emotional about it?