If you have finished the operation for a long time, wait for a period of recovery, usually three months.
If you have symptoms of redness, swelling, fever and pain, you should see a doctor quickly. Could be an infection.
Some people will have scar hyperplasia after finishing double eyelids. If they don't recover after a period of recovery, they will have to undergo surgery again.
I suggest you go to the doctor who performed the operation first to see what the situation is.