problems

hey I'm 27 married to a 39 year old with 2 kids biologically and 4 step children but I feel like I need my space. Before me and my husband was together I was in an abusive relationship. A year after me and my husband was together he asked me to marry him, I said yes. Everything was great in the beginning we laughed played etc now it's like things are stale dry and only on his need to do or want to do basis. I feel like there's no affection no love nothing but once in a blue moon he tells me how he appreciates me. is it just me or what. I am filing for divorce soon not because I want to but because I have to if I want to go back to college. I honestly and truly feel like I wanna take my kids and move I to my own place do for just me and my two. I need help please any advice will do nothing disrecptful though thank you.