Pregnant w H who doesnt want it and had affair

[Mom22]

So 2 night ago he came home at 3 and admitted he d been having another affair. With a girl who turns out to have Borderline syndrome. I stayed calm and showed no emotions while he cried. Next morning he hugged me seversl times and said he didnt know why he was throwing the best thing in his life away like this. Asked if i would be ok with going to a sexuologist (as he feels im not adventurous enough). I said sure.
But in the afternoon he said he was going dancing w her on Sunday and maybe staying the night to say goodbye but 'nothing woukd happen'. I daid do whatever you want but I am NOT ok with this.
Im just so pissed off. He was supposed to drop me and our daughter off at the train station on Monday but made a big deal out of maybe he cant. He finally caved when i put my foot down but he s just taking zero responsability.
Im trying to book more house viewings. I dont think he s actually going to be there for the baby more than occasionally. He might as well pay his own bloody bills with me living elsewhere.