I feel completely apathetic and emotionally numb. I know it's been only 3 days but i feel brain dead.
This too shall pass, as side-effects almost always do. Unfortunately, a degree of white-knuckling is sometimes required. Especially in the beginning antidepressants can be truly horrible drugs that *no one in their right mind would take...except that when they work they can change lives. Try to focus on where you want to be and not the journey to get there.
*strangely enough some without anxiety and depression do take them in the deluded belief they make their lives better than good. They might be more in need of antipsychotics as antidepressants have no affect on those that don't need them except for producing side-effects.