If one had unprotected sex on the 5th day of period. Though the ejaculation was not inside but on the butt region outside. Soon got it washed with water and as a precaution took I pill for the very first tym in life within 18 hrs. Initially there was no side effects but later. After 5 days got bleeding for 2 days. This was around 11&12th day of the cycle. On the 33rd day got my periods for 4 days. And again next month got my periods on the 31st day. For 4 days. In the meanwhile took 7 hpt test by preganews. All were morning first urine sample. And all the result came negative. On the 42 nd & 63rd day from the unprotected incident took 2. Beta hcg blood test and both the result were < 1 miu/ ml. And on the 73rd day from the incident took a pelvic sonography which showed empty uterus and 8.9cm*4.7cm*3.7cm measurement. My cycle has always been regular. From past 1 year its 26-33 day cycle So just wanted to know that is the pregnancy completely ruled out or still there are any chances of pregnancy? please guide me with your advise as this worry is constantly killing me.