i would discuss with your doctor where he trained and what kind of medicine he will be injecting. they use different medicines in the injections for different patients. the idea of the blocks are to break the pain cycle. you are usually numb in the area that is injected. this last for different times for different people. the injections are given over a period of time and you build up to a level that works for you. you can never judge yourself with anyone else.
the other thing you need to do is physical therapy if you are not doing so at this time. stretching is great. i never watch tv now unless i am exercising at the same time. you may try relaxation, and deep breathing. if you are not exercising because of the pain .... and i know that it sound crazy but the things i have listed here are only part of getting relief from pain.
back to the nerve blocks. i am sure there are different ways they are given. dr morse at touro and his staff use a very thin needle that is bendable. the injections do not hurt if you will relax. and it is hard to do when you see what this long thin needle looks like. he goes into my lower back 3 inches on either side. all of this is measured before hand and marked with a marker. i then turn over and he injects into the groin. the needle only goes in right under the surface very gentle and the area is numb as soon as the medicine is injected. this is how it works on me but every patient is different. dr morse does the blocks 3 times a week. they work so well that all of the patients with every kind of pain you can imagine try to get in first. i have no idea where you are from, but you may want to call touro infirmary in new orleans and ask for the pain unit on the 4th floor. the staff is the best and they will be happy to answer any of your questions.
i host and produce tv programs and i am working on a documentary about nerve block treatments.
good luck