Skin irritation is a common side effect of this and most types of trans-dermal patches. You are correct in that you should contact your doctor ASAP (and I know you are trying).
A few things may help to reduce the side effects though if you wish to choose to try to continue to use these patches until you can contact your doctors.
Make sure the area you apply the patch is totally clean and dry. Make sure there is not any soap, lotion, dirt, etc at or near the site.
Take an OTC (over the counter) allergy medicine such as Benedryl.
Do not cover the site with any kind of heating pad or electric blanket which can increase the effect.
If you can not get in touch with the prescribing doctor and you have another doctor as part of your health care team try contacting him/her and discuss the issues you are having.
2 confirmed herniated lumbar discs. Spinal Arthritis. Spinal Stenosis, diabetic peripheral nueropathy.