... plan b pill I took it right then in the car not even ten minutes after, the next day I had a sore throat and a couple of days later I was dizzy, nausea, I threw up once and I had a horrible headache about 3 days later everything stopped but I still have a cough, It's been about a week and a half since I took the plan b pill and I started my period but it lasted for only 2 days I already had my period on the 8th of December and I had another one on the 26th, could I be pregnant or is this how the symptoms work?