Can you take amitriptyline and hydrocodone together?

Hi' I have two herniated discs L5-S1 and I'm in considerable pain when on my feet' walking and working etc.

I have been given Dihydrocodeine 30mg four times daily' this really helps with the pain, but I would like to know if it is possible to take Amitriptyline 10mg with this to help releive the imflamation of the muscle around the discs ?