Coming off the pill

Melissa
Hey ladies, 
I have decided to come off my pill when my pack ends which should be in July but are there any side affects I should be aware off? For example I've heard that other people have been on their periods for like a month when coming off it etc. Any help will be appreciated! 
EDIT: I am not coming off the pill to ttc but so I have no trouble in the future becoming pregnant (I know they say it doesn't affect it but it's just to be safe than sorry)