need advise what do I do

Ria

So I had a baby 10 days ago at 31weeks so I'm very hormonal atm 

So yesterday I went through my partners phone and found out he's got 2 snapchat accounts ones full off girls sending him pics (he's asked for) and he's been sending pictures to them as well and all the messages are horrible and it's been going on for the last 3 years so there was a lot off stuff to go through and as well I went through his other Snapchat and he's been talking to this girl about our sex life which he clearly shouldn't be doing and he's saying that I'm boring and alsorts but the thing is it's not my fault I've been pregnant and I wasn't allowed to have sex as my doctor said it can start labour as my body can't go full term I confronted him last night and he won't stop saying sorry but I can't look at him the same anymore what should I do because the fact that he's been speaking to hundreds of girls sending nude pics to them and telling girls how boring I am in bed to some random girl 😩