question: Hi doctor,I am a 20-year-old female, height 166 cm, and weight 65 kg. I had two I-pills in one month. After the first I-pill, I got withdrawal bleeding after five days. It lasted for four days and the flow was normal. After 14 days of this incident, I again had protected sexual intercourse and took another I-pill after 36 hours. But this time even after 11 days, there is no withdrawal bleeding. Is this because of hormonal imbalance or pregnancy?