Husband wants to leave me...

I know this is all my fault.... I am 5 months postpartum, have been struggling with depression and had to leave my baby 7 weeks after a C-section because we needed the money. We live in poverty and are in a lot of financial debt because of my husband's medical bills from when he had cancer. I used to have horrid anger issues. Especially as a teen and they've resurfaced since being postpartum.

Me and my husband were shopping at the store and we arguing because I really wanted to make ribs tonight but he said we are low on food stamps and shouldn't get anything too expensive until the first of the month and he was just gonna make chili. I'm sick of chili. We were arguing and I don't know what came over me. I was so angry. My husband wears a wig because he's still be struggling to grow hair back since chemo and I just snatched it off and threw it.

My husband looked like he was gonna cry because he's embarrassed but took the keys out his pocket, put them in the cart and decided to walk wherever. I tried to stop him while holding the baby but he pushed past me and the store security got involved and asked did police need to be called. My husband said no and kept walking. I had to get the stuff in the car and drove around looking for my husband and got a text of him saying "I don't wanna be with you anymore." I texted him and called him apologizing. I said I'm so depressed. Idk what came over me. I'm sorry. He said he needs space to think. I don't want a divorce. I'm broken and know this is all my fault but I feel so lost