Hello, welcome to Healthcare Magic. Your experience is not uncommon for a woman who has taken a morning after pill. This medication contains hormones that can disrupt your menstrual cycle and cause irregular bleeding. Usually this problem subsides within a cycle or two. Your new diet could be playing a role, too. Drastic changes in diet, excessive exercise and significant weight loss
can all trigger menstrual irregularities.
I suggest you go back to your usual diet for a couple of weeks to see if your bleeding settles down. If it does not, see your doctor for advice.