I did it for the first time last night and it was different than I was expecting.
The injection was painless, no blood on aspiration. ( did it in the outside of the leg about midway on the upper leg, sideways into the front muscle)
But soon after the injection I got a warm feeling through my whole leg, and throughout the night my leg was kinda sore.
Today it still is sore, but not painful or anything. I was even able to work legs this morning.
Just thought it was a little weird to feel a sensation through my whole leg afterward, and wondered if anyone else got that.