When you take plan b and bleed heavily for 4-5 days. does that mean your not pregnant? because i heard if your pregnant you dont bleed that much you only spot light blood like pink or brown?

Plan B SE's: Potential SE’s w emergency contraception: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period or spotting ); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfort or feeling tired. If you develop chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Notify your GYN if your period is 7 or more days late.