I would say that the answer to your question is - 'are you concerned that the breast has not dropped and is still numb'? If you are not concerned, then don't let anyone make you concerned!
If you are concerned - there is not a lot that can be done about the numbness, although there is a chance there may still be some recovery. With regard to the asymmetry, you should consult your plastic surgeon to see if a revision is needed. As a rule, I try to put patients off having too many operations on their breast if they can avoid it, so unless it really bothers you, it may be best to leave it. Good luck.