Every infusion center has it in stock. They should have offered it when they saw that you were in pain!

It's a liquid that needs to be injected under the skin. It isn't supposed to sting at all but sometimes it does for me, but only a little and it goes away immediately. It forms a little bump when they inject it that disappears as it is absorbed into the tissues and they inject it right next to where they are doing the stick. The nurse may rub it a little to spread it into the tissues faster. As soon as it is injected it starts to work, so they can do the stick immediately. It's injected with a very tiny needle right under the skin.

It also comes in gel form and in patches for different uses, but for infusion, they use the liquid.

Good Luck and please let us know how it works for you!