Husband is cheating on me

I just need someone to talk to I think. For some reason today when I walked by my husbands work bag something screamed at me to look in it. I can’t explain it, just felt like I needed to search it. So just to ease my mind I did. And well I’m so glad I did.. I found 2 condoms in the front bottom pocket of his bag. We haven’t used condoms in over 3 years. We have an 18 month old baby girl and I’m 6 weeks pregnant with our second. I’m a stay at home mom( not by choice) he refused to let me work. I stood my ground and told him to get out of the house. I took his house key and told him to stay at his moms. To keep my mind busy until our daughter went to bed I packed up all of his things and they’re ready for him at the door. I don’t even know what I feel right now. I’m so hurt. We have such a good life. My heart hurts and I feel so alone. I’m considering abortion may be a good option for me (I didn’t want a second but he insisted) I have no idea what I’m going to do. For now stay in the house and get the divorce process started. Can anyone please just comment and talk to me? I could really use it right now