Short term disability?

I recently started a new job so I didn’t have insurance for a bit. I was doing ok without my adhd meds until I got a horrific case of covid about 3-4 weeks ago. I have gotten a prescription for my meds this week, am seeing a new therapist, taking steps to get better. However, the lasting brain fog from Covid is unreal and I am really struggling with work and it’s taken my anxiety and depression to an all new level where I feel like I can’t do anything in or out of work. I told my manager who I thought would be empathetic, but she was cruel and borderline violated HIPAA/ADA laws when speaking to me about it, which has exacerbated things and has made me even less productive and has made me spiral and unable to sleep. I scheduled a meeting with HR to discuss my options and am potentially looking at short term disability. I just don’t know what to do. If I get fired, idk if I can get a new job after such a short stint. I really love this company too, it’s just this one person has now made me feel so uncomfortable and exacerbated things. What options do i have? I can’t fix everything overnight.