Am I being overdramatic

So long story short my husband and I have been through a lot of issues in the past 4 years. None of the issues were ever cheating. I had our child in 2020 and while I was pregnant I grabbed his phone to hand it to him and a message came across the screen from a female with “😘😍❤️.” Now obviously that wasn’t from me, so when I said something it was flipped onto me like I shouldn’t have went through phone, blah blah blah. We moved passed that, and when I had our child sex was not a concern for me because I was nursing and recovering. Then one day I realized months after giving birth he has not even tried to initiate any type of intimacy at all. So I tried thinking he was waiting on the go ahead from me and he was uninterested to say the least. So my head is going a thousand miles an hour. I change my diet and start working out to try and get my body back to what it was prior to thinking he just wasn’t attracted to my body anymore. He started going out almost every night and staying out till 5-6am. So of course now I’m assuming the worst. One night he comes and gets in bed and he was so drunk that he doesn’t hear his phone going off so I turn to him to wake him and tell him to turn his phone on silent if he isn’t going to answer it and it’s messages from 6 different females. All of them saying things that don’t need to be said to a married man. So of course I look at the message threads and he is the one initiating contact with these females. So I confront him and I’m told to not worry about shit like that because it’s just social media. When in all reality social media might be how they met but these were all text messages. My thing is if you don’t want to be with me tell me so we can go out separate ways instead of making me feel inferior and less than. He just keeps saying I’m overdramatic and I shouldn’t even be worried about it