my vet told me the lump is from not sticking it in far enough. BUT it will absorb- itll just take longer. I had to inject my snake with baytrill for 2 weeks lol it was tough ino how you feel.
TIPs:
get 2 people 1 to hold the snake another to inject
inject in between the scales
make sure your injecting the 1rst 3rd of the body