hehe.. i was going to suggest just that!
If you dont have any, use nail clippers. As you said, just on one side of the knot.
To reduce the tingle of pain, place a warm rag on the area first for about 10 minutes.
If you notice :
Thick green drainage,
( thick like pudding ! this would stand out to you so dont worry... )
The skin seperating,
Hard lumps
or red lines around the wound, let your doc do it.
Other then that...
yank away sistah!!