Weird period

Ok so I took a plan b. I got my period two days early. Day one was light and normal. Day two was spotting in the morning and half the day. Gone the night. Day three was light spotting. Day four was nothing and day five a little bit of spotting then vanm no period. I usual have terrible cramps with a lot of muscle pain and headaches and nauseous but I cramped a little on day one. And I've been falling asleep earlier than usual and I'm tired more than usual. And impeding a lot. And on day one in did wake up puking. Its weird. I thought plan b supposed to make you bleed a lot