Struggling with staying home.

I recently got out of the military and am waiting on my disability ratings. And I just feel like a huge bother constantly asking my husband for money. My phone recently got shut off and I’m taking care of my 18 month old niece permanently. And i guess I just feel jealous as I struggle to pay my half of bills and buy my niece what she needs and he spends so much money on video games and other fun stuff. I get it it’s his money and he can do what he wants and he did recently loan me 200$ so I could get my niece. But it’s all getting too much I got out of the military for ptsd and I can’t even afford the copay to see a DR to get my medication. While he recently just bought two new TVs. It just makes me feel really bad and almost like I’m so jealous of him. He does help me hes made my last two car payments. At the same time I feel like normal married couples just share money and have joint accounts. But he says he won’t do that incase I try to take his money and leave. Also I paid for everything before I got out of the Army even though he makes twice what I made in a month