I have gone through opiate withdrawal and I know how painful it is. Have you tried taking a hot bath? They always seemed to help the leg ache. Have you thought of going to a regular dr and telling him/her what you are going through withdrawal.
I would also suggest finding an NA meeting to go to. You will find a lot of support there and most folks will have a lot of experience with withdrawal and recovery.
I will say a prayer for you. Hang in there and DON'T USE NO MATTER WHAT!