: Seek help for unusually heavy vaginal bleeding that is not your period.
: This can be a warning sign of an ectopic pregnancy (a pregnancy outside the uterus), which is a medical emergency. Plan B
: You can report serious adverse reactions to the FDA MedWatch Program online or by calling 1-800-FDA-1088. 2. When to Contact a Healthcare Provider : Seek help for unusually heavy vaginal bleeding
: Such as hives, difficulty breathing, or swelling of the face/throat. 3. Follow-Up for Effectiveness Plan B One-Step (1.5 mg levonorgestrel) Information - FDA Follow-Up for Effectiveness Plan B One-Step (1
: Call 1-800-330-1271 (Mon–Fri, 9 AM – 5 PM ET) to report side effects directly to the manufacturer.
, you can report it through the following official channels:
Most people do not need to contact a professional after use. However, you should "report" your symptoms to a doctor or seek immediate medical attention if you experience: