I'm so crushed and confused 😪💔

Let me start out by saying my husband and I have been married for over a year now, very happily (or so I thought). We haven't had any large arguments or problems in a couple years. I'm now 18weeks with our first and we are both very happy as we had 2 MC's in a year prior. Lately, I've been having strange dreams where either my husband dies, or we get divorced; something bad happens and we aren't together when the baby comes. I chalked it up to pregnancy dreams. But I don't know. I just had a strange feeling to check his phone tonight, which I haven't in years. I didn't see anything until I went to his web browser. He had open tabs to hook up/dating sites. I checked his history and he visited these sites this past Saturday, the 12th while he was in Saint Louis for business. The location "Chesterfield" is about 20 minutes from where his hotel was. I don't know what to think. This is so out of the blue. I honestly had no idea I would find something like this. I don't know what to do 😥 I know I should confront him. But what if he denies it or tries to make up a lie, or what if it's a mistake? I just don't know. It breaks my heart into a million pieces to think that our family is already broken.