I have some questions for it this is my first time taking one for anxiety and depression.

What should I expect on feeling better:

Do I feel better after a week? 
Does this change who I am as a person? 
I haven’t  been able to feel much emotion in awhile except usually irritation or sadness, will this give me back joy and laughter? 
Or will this turn me into more of a robot and not be able to feel? 
Will this help my brain to motivate myself in terms of doing regular normal activities everyone does but I don’t have the energy to?
Will my sex drive increase or go to normal, I feel like it’s decreased or is kind of low for someone my age?