UPDATE: I tried talking to my husband and all he does is blaming me for it. He said it's my fault and I should have satisfied his sexual needs so he doesn't have to do what he did. I haven't stopped crying since. I feel so much pain and I am so lost. I don't have anyone in the US. My family is far away and I don't have money to just leave by myself with my baby

I really need some advice right now. I won't keep this long..

My husband and I have been married for almost 3 years, we have a 4month old baby.

This morning we went to the store and he had my phone for the shopping list and I went to the car to feed the baby so if he needs me, just to call on his phone..i put his phone next to me to make sure I hear it. After he took half an hr, i messaged him to ask what is going on. That's when I saw an unsaved number talking about orgasms. Of course, I opened the convo. The conversation started about 2 days ago her saying she got his number from someone (did not read through). That's where the sexting starts and picture sharing.. I asked my husband about it (still thinking it's some sick joke). He admited to wanting a naked picture from her and that was it. He said he was desperate and doesn't know why.It hit my heart like a bullet. I did not expect that. He did something like this right before we got married so I want to leave but I don't feel right about breaking my family and doing this to my son. I think he will do this again and I don't want my son to grow like that but I also don't want to be a broken family. I am still recovering from a harder delivery and we can't have sex yet. I also feel super insecure since I still have all that fat..

He destroyed us and I don't know how to deal with this. I can't trust him again