Watching my marriage fall apart at 33 weeks pregnant

My husband asked for a divorce a few weeks ago. I'm now 33 weeks pregnant and I feel devastated. But also as sad as it is, I'm not surprised. I'm not gonna sit here and bash him because I'm gonna be honest we both did really fucked up shit in the marriage. We probably should have divorced years ago but we stayed together for the kids. I'm actually the one who moved out. I'm staying with my parents. The reason I chose to move out is because both my boys said they wanted to go with their dad and while it hurt I'm not surprised. They're 17 and 15 and clearly want to make their own choices. They're super close with their dad. But it doesn't make it hurt any less. Since they both wanted to go with their dad I didn't see how it made sense for him to take both kids and go to a hotel. I'm depressed and just watching my life fall apart. The boys came over last weekend for time with me and the divorce is clearly hurting them. I never imagined on my wedding day this is where we would be. And it destroys me.