Stress and realtionship... HELP!

My boyfriend and I have been together for 7 months now. In this time we have moved in together, I lost my job, he got a new job and I was in an accident that left us without a vehicle. We got a new vehicle and it has nothing but a headache. Basically what I am trying to say is that we have been so stressed out over the last few months and we have been arguing about almost everything. I have been depressed about my job and my car, and watching him work himself sick to make sure that we have the things that we have, which has resulted in a very low time for mean. Meaning that I haven't keep up with the housework, I rarely spend time with my friends and apparently I walk around all the time "looking unhappy as hell".

He seems to think that when I get straight again with working and all that I'm gonna leave him, which is ridiculous. We love each other a lot, and that has never been doubted. I would absolutely be miserable if we were to break up. I need some help figuring out a couple of things. How do I get myself out of the nasty depression without medication? I've been on it before and I hated the way that it made me feel and I refuse to take it again. And what can I do to prove to him that my love for him is true and unwavering. I already do things like cook his favorite food, I help him with his boots, make sure his work clothes are out and ready when he gets dressed. I send him lovey dovey texts while he's at work to tell him I miss him and post stuff on his Facebook for him. I'm at a loss and my low self image is killing the best thing (besides my children) that has ever loved me. Please help ladies I need your opinions. Thank you ❤