Hi I've got throat and neck cancer and eight weeks after radiotherapy I got an ulcer inside my mouth it's been there 10 weeks now and the referred pain in my ear (as they keep calling it) has been going on a year, nothing has taken the severe pain away. Last wed 30/11/22 I had a biopsy done on the ulcer and my dr prescribed morphine patches which take up to 24-48 hrs to kick in. I've now had patches on 50 hours and the pain is so bad I haven't been able to get out of bed since biopsy. Does anyone know why it would not work on me. I lie here waiting for the pain relief that doesn't come