Management may be purposely making my anxiety worse? What should I do?

A little back story, I've had anxiety and depression ever since I was 12. I officially got diagnosed with PTSD, bipolar depression, and anxiety at 19. I had a major anxiety attack last month at work to where I was taken to the hospital. The next day I came back and was told I couldn't get promoted because of my anxiety. Boss thinks I'm all of a sudden incapable of doing my job. Whatever.

Tonight, I get to work and immediately get yelled at because photo was hectic this morning even though I only left two ornament orders. Later on, I found out its because he purposely let a coworker not work on photo for four hours because a printer was jammed and he couldn't fix it. But my fault. Anyway, when my coworker was in photo, she had everybody possible helping her get caught up. As soon as she left, they left me with all of the orders myself. No one worked in photo with me at all.

When I announced I was going to lunch, I expected someone to take over photo while I was gone, but when I came back, the whole screen was filled with orders.

Later on, a different coworker asked me to take over the front area so she could use the bathroom and I said I couldn't because I was trying to catch everything up. She offered to help because it was 9:30pm and it was pretty dead. A manager saw her helping me and yelled at her for being back there helping me.

I just don't know what to do. I'm waiting on a previous boss of mine to text me to see if she can get me back there so I'm trying to hold out for that, but I literally get so worked up that I can feel my heart pounding and I feel suicidal every time I go to work. I'm currently on meds for my anxiety and they help really well whenever I'm not at work, but the stress work provides me overpowers the meds and I hate it.

TLDR: I feel like management is purposely trying to stress me out more after a major anxiety attack I had last month