Hi! My period ended on February 7th and I had

Patient: Hi! My period ended on February 7th and I had sex that same day and I took plan b within 24 hrs. Then I had sex again and took plan b within 48 hrs and thennn I had sex again but he supposedly pulled out but we still took the plan b just to be safe.. So I took plan b three times. I bled like 1 week after taking the last pill. I Was due for my period 4 days ago so I took a pregnant test (the first response one) and it came out negative. So should I worry?

Doctor: