I am 19 years old my height is 5 3 and I weigh 162 lbs. I had sex 2 days after my period, I took the morning after pill the day after and I have had lower back aches, I am bleeding, a lot of my symptoms are similar to my period, I have to pee frequently and at times I feel nauseous. it has been 5 days since I took the pill. Is this normal?