Will my husband realize what he lost?

My husband went away for work 2 weeks ago, while out there emailed me and said he wanted a divorce when he got home in 2 weeks, then did not speak to me again. We have a 1 year old son as well. The whole time he was away I was texting and calling and emailing trying to talk to him or get him to talk to me and he wouldn't, basically cut me off cold turkey. He got home Monday and still did not contact me nor come to see our son. I got fed up with my wandering thoughts on what was going on so I hunted him down at his parents house. He then said he wished I was dead and everything horrible like that and that if I didn't go with everything he wants for the divorce he will make my life hell and try to take our son from me. Since he said he wished I was dead I basically stopped caring and don't wish to speak or see him. He is now emailing me and calling to see our son, who he did not wish to see before I confronted him. I have been completely ignoring him and not answering nor letting him see our son ONLY because he threatened to take him away from me and I do not want to let him take him then wander if he will bring him back. I am seeing a lawyer on Monday as to what to do with his threats regarding that (I do want him to see our son just not take him away which he said he will do). Anyways he is also claiming he is seeing his ex and staying at her place and sleeping with her etc. Well now that I am ignoring him will he start to miss me? Since I am not begging and crying and constantly trying to get in touch with him? Will it start bothering him? I do love him very much and yes I know he is treating me like crap and has said unforgivable things to me, but I do want to salvage our marriage. Will me not speaking to him/ignoring him like he has me even do anything? Or just make him madder? I do not have his new cell phone number, he has called me from his parents house and emails me from his iphone, so if I were to reply he'd see it right away etc. I have only seen him the one time since he has been home. I just want to know if ignoring him because of the awful things he has said will do anything... He has not said anything about us at all just about the baby when he emails me... Is he thinking about us? Or just having fun with her? She will kick him to the curb once she meets someone else like she always has... Help! Just wnat my family back together!!