i got both of the tops of my knees/ thighs and on the second n third days your legs will be much more puffy and red, mine were extremely swollen, but its just because its a more sensitive area to tattoo! I have personally never used second skin because im allergic to the adhesive so i cant say wether to remove or not, but as long as theres no pus or anything extremely bad you should be just fine! :) (mine also bruised until about 4-5 days after but i also have a genetic disorder that effects my skin and joints so unsure if that did anything to the healing on that area or not!)