Thought I was basically recovered :(

The last month I seriously thought I was basically recovered. I felt somewhat happy, connected, and the weird thoughts were almost all gone. I was living life as normal as possible. I still had this weird lingering sensation but I thought with time it would go away too. Now I feel like it's all coming back again. All of a sudden I feel like I can't think properly, my memory sucks, and possibly brain fog is coming back and I feel a disconnect when I talk like I did when this first happened. I connected back then disconnected again ???????????? I feel so frustrated. I'm scared I'll never know normal again or be a normal happy functioning person after all this.