In a regular 26-32 day cycle for the past 6 months. If one has had unprotected sex on the 5th day of period. And took an I pill within 18 hrs. After 6 days got bleeding for 2 days. And after 34 days from LMP ie in november. Got the period in december. And january. But in feburary got bleeding only for 1 day. But in the meanwhile took 8 hpt test with the help of preganews. All negative. And took 2 beta hcg test. The first on 42 days from the unprotected incident and second from 63 days from the incident. Both of which came <1 miu/ml. So does that all rule out pregnancy. Or still chance of pregnancy there? On the 73 days from the from the incident took a transabdominal sonography which showed uterus is anteverted. Empty. And measures 8.9cm*4.7cm*3.6cm. please guide me with your advice.