He’s cheating

Just found out my husband is cheating. I don’t have proof of anything physical but I found messages on his phone to some woman he works with saying shit like “I miss you” “I want to be with you so badly” “you’re so sexy and beautiful, like perfect”. He got extremely sketchy when I asked for his phone to take a picture and I demanded to see it. I’ve honestly felt something’s been going on for weeks, just a nagging feeling. I’m so fucking heartbroken. I never thought in a million years this would be us. He always treated me so well, took care of me, he was my best friend. It’s our 9 year anniversary in 2 weeks, we have 3 children and I’m 15 weeks pregnant. How the fuck do I move on from this. I gave him everything, I raised his kids, took care of his home, made his meals, cared for his elderly parents. And I get this? Life taught me a long fucking time ago not to trust ANYONE, I don’t know why I made an exception. What do I do now. I already kicked that bitch out but now what. The shock is so real I can’t stop shaking.