I Just Had 1 Tendon Repaired And 1 Donor Tendon

I just had 1 tendon repaired and 1 donor tendon replaced both in right ankle and the orthopedic dr prescribed a small round NO IMPRINT on either side except a cut line and on rx bottle it reads oxyCODONE HCL 5mg take 1-2 every 4-6 hrs for pain. I am in a lot of pain and they aren't giving any relief. I am a female 61 yrs old and very athletic. Why is there no imprint on pill and why do they not help me? HELP ME PLEASE ChefKat