emergency contraception
"Long story short, me and my bf made a mistake while I was on my period. We didn't want to risk it so I took plan B the following night. 

My period lasted an additional 10 days... I guess symptoms and their severity differs. I had non stop migraines and cramps during the 10 extra days. Felt nauseous, and started bursting into tears at odd moments. I felt depressed and my mood kept changing uncontrollably. I wasn't sure what was happening. My friend asked if I was pregnant (I'm not the pill worked) but looking deeper into the reviews and side effects... I wouldn't have taken it."