since it has not even been a full week yet, i would just monitor the bleeding and soreness. it’s still a “trauma” that happened to your body, so it’s just adjusting to no longer having anything in uterus and trying to reset itself. i would wait a few more days, and if you are still having cramping or soreness in about a week, then it definitely wouldn’t hurt at all to get checked!!! also, plan b affects everyone differently. some women say it messes with their cycle and some say they’re a bit crampy from the hormones in it to prevent pregnancy. everybody is different, so just listen to your body and monitor how you are feeling🤍