Hi and welcome to DWD. I think you need to go and tell your dr what you are telling us. It might mean that you need a dosage change, or that you need something additional such as counselling to help.
I can say that actually I don't think anyone is "the old you" once you've been through any sort of chronic illness. I think things like that change you, the same as every experience be they "good" ones or "bad" ones. I think all you can do is keep on trying to be the best you can be each day and work through things with support of those around you and your medical professionals.
Did that answer anything? lol