I need prayers and strength

Things haven't been going well for me and W lately. He's very short with me, ALL THE TIME, doesn't really show affection very much, NEVER offers emotional support if I'm sad or just had a bad day, he's NEVER happy it seems, and I don't think he wants to be married anymore. :( We're both under ALOT of stress lately because we're both in difficult educational programs, I'm in pharmacy and he's in nursing so time and money are scarce at times. I don't know what to do. He said his main two problems are 1.) that I'm a messy person (and I am) and I don't clean enough and 2.) I don't fufill his sexual needs. I admit that I'm messy, but it has a lot to do with me being so busy at school and I do work still also. And about fufilling his sexual needs, I admit I am lacking in that area, I just don't have the same needs he does at this point in my life with so much going on at school. The difference between us is that I'm STILL HAPPY, but he seems to be NEVER HAPPY. He also admitting to me the other day that he doesn't feel he'll EVER want to have children, which is something I MOST DEFINATELY want. I don't know what to do. I need prayers that we'll be ok, I don't want a divorce, but I can't go through my whole entire life with someone who is NEVER pleasant around me and never shows me affection and love and his always mad at me. Also these past few weeks I've been without a car so he's been driving me around and he's really unhappy about it. He hates it and it just makes me feel twice as bad. I don't know what to do.