give them time to work, it may take a few weeks from my experience. Also, when quitting, wean yourself off very very gradually to avoid side effects.
Sounds like you are on the right track with treating anxiety. I assume you are under the care of a doctor, that's how you got the medication and you doctor knows you are taking it.
My wife has had problems with stomach upset, I think it was from the anxiety med, but it could be due to the anti-depression med, I can ask if it would be helpful to you to know. I am sure the anxiety med makes her tired.
I do believe that both anxiety and depression medications take time to work, that is they don't make one feel better the first day, or even the first week.