I took a plan B pill almost 3 weeks ago and had no side effects right after. Now for about a week my boobs have been sore (my period is due in a week). Now I used to have sore boobs in the past but for the last few years it hasn't been a PMS symptom. Could plan B cause sore boobs almost 2 weeks later....as of now the pregnancy tests are negative...

Fyi the soreness isn't excruciating. Just almost feels like sore muscles would.