Need some hardcore advice!

Okay me and my husband got together March of 2014 after i go to my duty station and then we ended up getting married July 2014! (We are military we move fast lmao) anyways a week after we got married i got pregnant but didn’t find out till August i was pregnant obviously! Anyways after we had our daughter in April 2015 things changed in our relationship he wasn’t the same we fought constantly! Well in October of 2015 i ended up going to the crazy bin because i had to go to the field and be away from my daughter for almost 2 months and thought i could handle it well a few days later ended up having a breakdown in the field (probably from lack of sleep) and decided i was gonna get out the Army (biggest regret) well i started the process and got out in February 2016 and well i didn’t know at the time my husband was talking to two other females from his home town (California) well in March of 2016 we decided to go visit his family in Cali once we got there the second we arrived at his cousins house he ditched me to go hangout with his friends and then almost every single night he left late (he would ask me to go but we had a baby and we were in somewhere new and she didn’t know anyone wasn’t gonna just leave her) but he wouldn’t come back till 3-5 am and i even asked him one night if he was seeing someone else and he denied it and was distant from me the entire trip! We even discussed divorce because of how he was acting! Well we ended up leaving early bc me and his cousin who we were staying with got into it and instead of staying with me and making sure i was okay he left me at his friends parents house while they went fishing! Fast forward to April 2016 a little bit after my daughter’s first birthday! He was liking this girl i am friends with Instagram photos all the time and NEVER liking mine so we got into a fight about it i left and went to a friends house to chill out! Then decided to go back and go through his phone! So i get back home and i ask him for his phone he tries to ask me why and i told him to just give it to me and he was like hold on while scrolling through and told him to quit trying to delete shit and give it to me! He did and i went straight to his IG and messages and saw the girl he was talking to and was calling her baby i flipped and punched the shit out of him! Well we ended up getting past him cheating on me with two girls! And we decided to have a baby in July 2016 and had our baby April 207! Well lately I’ve been super depressed my depression got super bad after the baby was born! And I’m just not happy and i feel no love or spark in our marriage and told him this and now that we are separated i feel empty and miss him even though we still live together he is never home bc of work he has a traveling job and his gone for 6 week and home for one! And now i feel like he is completely done with us and i don’t know what to do if i should just move on or we go to therapy and work it out!