What should i expect after taking plan b?

Business as usual...: But, you may have some irregular spotting or a change in your cycle to start due to the increase and change in hormones introduced into your system. Usually this regulates after 1-23 cycles again. Best wishes.

Plan B: Potential Side effects w emergency contraception: tender breasts; menstrual flow changes (spotting, bleeding, early or late period); loose stools; dizziness; headache; nausea/ vomiting; abdominal pain / cramping or fatigue. For chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Take pregnancy test & notify Dr if your period is 7 or > days late. Possibly no SE's.