Hi
may / might
Similarly, we can use the modal auxiliaries may or might to say that there is a chance that something is true or may happen. May and might are used to talk about present or future events. They can normally be used interchangeably, although might may suggest a smaller chance of something happening. Compare the following:
* I may go into town tomorrow for the Christmas sales. And James might come with me!
* What are you doing over the New Year, Ann? ~ Oh, I may go to Scotland, but there again, I might stay at home.
* If you go to bed early tonight, you may / might feel better tomorrow.
* If you went to bed early tonight, you might feel better tomorrow.
* One of my New Year resolutions is to go to the gym twice a week! ~ And pigs might fly!
Note that 'Pigs might fly' is a fixed expression and always uses might. It means that something will never happen.
In the first conditional example, will perhaps could be substituted.
* If you go to bed early tonight, you may / might feel better tomorrow.
In the second conditional example, where might is an alternative for would perhaps, may cannot be substituted.
* If you went to bed early tonight, you might feel better tomorrow.