Originally posted by Jacked631
What do I do if this turns into an abcess?
See a real doctor instead of listening to us amateurs.

Seriously, bro, that is unlikely at this point, since it is now three days since the injection. If it had abcessed, you would have had actual pain as opposed to numbness, and would likely have had a fever due to the infection caused by the abcess.

Chances are that you will never know what caused this particular numbness, but as long as it continues to improve (which may be over the course of the next week or two), you'll be fine.