Depression is a terrible thing to have, I've had it since I was 16 and I'm 25 now

Of course you have depression, mental illness isn't a competition. It feels awful when someone tries to invalidate what you're experiencing, and it's even worse when it comes from someone you love. He obviously has a lot going on, but it's still not okay for him to take it out on you. If you haven't already, I think you should communicate to him that you felt hurt by his lack of support because you /need/ support to get better. I'm glad your treatment has been helping so far and remember that it won't be a straight line to recovery, there are bumps and setbacks like this, but overall you'll feel better than before.

I’m so sorry he lashed out at you. Depression is not something you decide to have, it’s a chemical imbalance in the brain. Your brain doesn’t function on its own properly. Someone doesn’t develop depression because their life sucked super hard, any more than cancer only develops in only the most unhealthy people.
Don’t let your husbands lack of support derail you from taking care of yourself.
Maybe if you can, take a step back from his lashing out at you and know that he loves you, and is having his own crisis right now.
That doesn’t excuse his behavior at all, but maybe it will help put the circumstances into perspective right now. If he’s been great with you’re disgnosis and treatment so far, then maybe cut you both some slack and know that everyone has a bad moments.
Hang in there. Things do get better.

Thanks everyone. I know he didn't mean what he said, but it hurt all the same... he did apologise a little while ago for what he said. He has major depression and with this terrible situation with his family its just made it worse, so he ended up lashing out at me. I'm a big girl I can deal with it and just support him as his wife but I'm not going to give up on myself because of this. Hoping to get counselling soon.

I don’t know what to say, but I support you

I'm sorry you're dealing with some rough stuff. What you feel is what you feel, and how someone else feels doesn't diminish it, but it may help you and your husband to see a couples therapist so the communication can become a bit more positive and maybe you two, or moreso him from what you're describing, can learn some better ways to deal with his anger.

Mental illness isn't an excuse for bad behaviour. If this is a pattern of things he says about your depression (and not just a one-off) then you should hold him accountable. You deserve to receive the love and support that you give him, even when he's having a rough time. If there's a pattern of lashing out then apologising, you should have an honest conversation about it because you absolutely don't deserve to just "deal with it" whenever he says something hurtful. Depression and anxiety are hard enough to manage even when you're getting 100% support. Apologies if I'm overstepping and obviously I know next to nothing about your marriage, I just want to see everyone successful on their mental health journeys.