depressed with no options

Ever since this whole thing began I have had periods of low mood, but it was always managable. I could lie in bed and watch a comedy and let it pass. Two months ago I woke up with severe depression and it has been unbearable since then. All my other symptoms have got worse in the mean time. I just can’t enjoy anything, I can’t take my mind off things and I get really vivid intrusive memories. I’m so scared as I know an SSRI won’t help me, my symptoms are too extreme and the only reason I am in this mess is due to being put on SSRI when I had a brain injury.

I keep obsessing over the time period this all began and it is so frustrating. I didn’t do this until recently. My physical symptoms are so bad so I can’t even exercise. I feel stuck with no options.