I don’t read this as “Lance the fluid” I read this as “numb, and then apply pressure towards the stitches/opening”.
If the wound is scabbed over and does not appear infected (not warm to the touch or red or obvious signs of pus) then I wouldn’t try pushing the fluid out of the hole (and opening the hole back up). Edema can be pretty excessive looking at times.
Glad to see that it improved without being opened back up.