Hello! i'm 19 years old and I had sex on 6th march I took unwanted 72 on 7th and 8th march. My first date of last period was 14th feb. After a week of unprotected sex. I have got few droplets of blood since past 3 days. I got my hcg beta blood test done. The beta levels are 0.05 ml.should I consider myself to not be pregnant and wait for periods? If I do not get periods after a week also should should get the test done again?