So is it normal to experience a relief from symptoms for a couple of weeks and then for it to return?

I feel a lot more on edge now, and can feel tension in my head again.

It worries me because I so enjoy feeling better and calm, and it scares me that I won't be able to get that feeling back sometimes. I just want to be normal!

Last night I took two tablets, will do the same again tonight. I can't feel the effect from the tablets as much as I did when I first started taking them.