I had my second shot today, and that was no problem. Drew with 18G, stuck with 23G. Here is the worry. After finishing the injection, I looked at the vial and there was a very tiny piece of rubber from the stopper floating in the oil. I had sterilized the top of the vial before using it, so having it contaminate the oil isn't a problem, but I sure as hell didn't want to suck that thing up and shoot it inside my muscle.
Luckily (I think) it was at the perfect spot, so I attached a new 23G needle to the syringe, inserted and pulled the little guy out. It's not there anymore, and I am absolutely positive it was not in there until I shot today. I'm also positive it's out now.
So, should I worry about this, or am I good to use the rest of the vial? I have only drawn twice so I really don't want to throw it away if I don't have to. But I don't want an infection even worse.