I want to divorce but don’t know how to tell it to my husband

We are currently not talking to each other because we had a very heated argument, I told him some hurtful (but true) things and I dont even feel bad about it. At this point I can’t say I still love him, all I feel is resentment and anger. Plus I’m three months pregnant with our second baby, our daughter is one and she loves her father so much. That’s sad But IM DONE! I want to start a new chapter in my life, go back to college , find a better job, make some moves in my career. But still, I don’t know how to tell him, he will be surprised for sure