Welcome and sorry for the suffering and your struggles. Sounds like a truley hard trial you are going thru. Some here have had some physical struggles. Your are maybe the most severe I have read in this forum. Many of the symptoms fogginess, memory, confusion many here are familar with.

PCS can be like a many headed hydra. It can as you well know keep raising it's many heads and the symptoms can be long lasting. You are among good company. We understand as we are or have lived it. Vent if you need to, ask any questions you amy be curious about. There are some very savy people you may be able to help.