Chrisitians ONLY....marriage advice?

I am married to a soldier. Im 18 he will be 23 in a week. Anyways, we've been together 5 years. And when I turned 18 we got married we only got 2 live together 2 months before he had to deploy. After he left we start having alot of issues. I found out he had made his mom Power of Attourney and she closed me off his account and even tried to terminate the lease on our apartment. I was so hurt. I still am he's been gone 5 months now. We are better but I cannot get over how he trust his mom more than me she's doing everything I should be doing. I dont feel like a wife. He now has me on an allotment ( set amount of money goes into my account automatically every month). His mom has 100% access to his account I dont know what he makes or anything. I have considered divorce, but I am a christian and I know God wouldnt approve. I took another approach just staying positive and talking to him like it didnt matter we dont argue anymore about it and he claims he's in love with me still and we have good conversations but I am still very hurt. I have been praying and God knows Ive cried out asking him to change him he's the father of my child he's all ive ever known. Is it too soon to give up on him since we're newlyweds or should I leave or what? His mama thrives on hurting me. So I stop mentioning this accoun thing and POA thing with him/her because I felt like I was losing. I am now enrolled in nursing school for a year trying to keep my mind off of all of this. Could I please have some good christian advice?