Anxity weak memory. Proper like before?

I m 26 year old, have anxity and fobia from my childhood, last year i went to a neurologist, he suggest me some blood test and mri brain, and betacap cr 40, amixide h. Blood test report ware normal and mri he saw just two very small spot, so he suggest me clopitab 75 for 3 month then stop. And when i know about those very small spot my tension was increasing, so he suggest me zaptra 12.5 and stop amixide h, From last 8 month i take zaptra and betacap. Now i feel much better but my memory is weaker I can't concentrate, and confusion is also there. And Yesterday i take 2 zaptra by mistak is there any problem?? Just by mistake i take 2. And my main question is when my doctor take off those medicine can i be proper like before?? I m very much afraid on that. I want to be like before. My English is weak. Please help me doctor. Thanks.