I fell off my deck on to a half barrel planter. I ruptured my C5-6 disk and my C-6 nerve was impinged. If I had access to a gun I would have used it. I was going to the ER several times a night begging them to knock me out. I felt like I had a girdle around my arm and it was continuously compressing and squeezing my arm. I could not feel my hands and fingers very well. I found a position to lay in that sort of turned the pain off a bit.
If it is a pinched nerve the only way to fix it is to go to the doc. He should give you a Medrol pack. It is a steroid that you take a whole row of the first day, all the next row the second day (It has one less pill that the first row), the so on until you are at the end and only have 1 pill to take. By the 3rd day I was pain free.
I did physical therapy for several weeks and learned some exercises to open up my neck joints to relive pressure. The one that works the best is where I do neck pushes...sounds odd I know.
You know how you tuck the pillow under your chin when you are going to put the pillowcase on the other end and pull it up? That's a neck/chin push. Get a good size pillow and gently extend your neck by moving your chin towards your chest with the pillow under the chin. I get a big stretch in my neck by doing this. There are a lot of exercises to strengthen the neck online, just google it. You should find one with lots of pictures.
Stretching the upper back is also good to relieve pain and pressure. I find doing a door push-up opens up the rib cage and makes my upper back feel much better. Stand facing a corner and put your hands, palm towards the wall, about shoulder or breast high and lean in like you are doing a push up. This stretches the sternum out and really makes a difference. Do it slowly, not like exercise but more of a stretch.
I find that ice helps relieve the inflammation also. The physical therapist told me to take Styrofoam cups and fill them about 1/2 - 2/3 full and freeze them. When you are feeling a lot of pain in a pressure point then have someone take a cup of ice out and peel the top off until they expose the dome. Then they can hold the ice for a long time with out getting frozen hands. They can use pressure while rubbing too. This helps reduce the inflammation in the area and helps it heal. As it warms back up the blood flows to the area bringing much needed oxygen and nutrients to heal the injury.
Motrin or another inflammartoy medicationwill give you much better reaults that Tylenol or some other regular pain med. You need to reduce the inflammation and irritation on the nerve or even the muscle if it's something else.
Going to a doc who can write a prescription for a steroid is what you need to do. "If" you do have a pinched nerve it may even require surgery. I did not have insurance and could not do the emergency surgery the surgeon thought I needed. He wanted to bump some surgeries and get me in the next morning. I had to decline.
I have constant numbness in my right hand and fingers. It is worse some days than others due to how I am treating my body. If I am stressed and I am wearing my shoulders up to my ears then of course my muscles are way, way, way, tense and that is not good for any of my health. If I do relaxation on a regular basis and take care of myself I can be almost pain free and not fumble and drop everything I try to manage with my hands and fingers.
Nerve damage can occur if it is in crisis. The longer you wait for medical treatment the more the nerve dies. Call the doc and find out if they want to see you. I would not want to take a bunch of pain pills and go to bed. I use the other treatments instead, the steroids, the ice, the exercises, etc....
I will also say that if heat helps it feel better it's probably not a nerve but a muscular issue instead.The same exercises can help stretch them out and the Motrin will still help but the Medrol pack won't be needed as far I know.