Lost and confused...

My husband and I had our first baby after 8 years together this last January. When I was 20 weeks pregnant I found out surprising news about him - he has a porn addiction type thing. He admitted to talking to girls online and paying $50 for a webcam. Since then I have caught him a handful of more times. The most recent was 2 weeks ago he was chatting with girls online and sending pictures and videos back and forth. Part of me says I should leave but part of me says I made a vow for better or for worse and I don't want to break up our family for my daughters sake. I've been on maternity leave so I feel as though he feels I can't leave because I don't have the means. I have an interview today for a registered nurse position and I hope like hell I get it... It gives me options. But I'm still here wondering what to do... Counseling? Divorce? Does anybody have any true advice? Thank you. My heart is so heavy. PS: Not that this should matter but I am good looking...at least better looking than the girls hes talking to...I lost all of my baby weight.... I guess I'll just never be good enough? idfk.