My double eyelid won't go back to the way it was (Photo)

I am chinese and I have slight double eyelids. They are usually even but one day i woke up and my right one was stranged. This has happened before, usually if i cry the night before, but if usually returns back to normal after a few hours or by the end of the night. This time its been a few days and it hasn't returned back to normal. What should i do? Will it stay like this forever?