I took the Plan B pill on March 31st in the morning. I had sex the night before. It is now April 6 and I am just starting to get abdominal pain. I could barely sleep on April 5th. I had a pot pack on my stomach that worked for a while, but stopped. I have been getting hot, then cold and even a little nauseous , but I do not vomit. My period is due April 11th. Should I be worried ? Can I take anything to stop the cramping. I WILL NEVER DO THIS AGAIN OMGGGG