Pregnant - 6 weeks 2 days

Found out I am pregnant last Thursday morning. I did bloodwork on the weekend which confirmed I am pregnant. It is unexpected. There is a possibility of two males. The start of my last period was Feb 11 and the ultrasound today showed I am 6w 2d. I had sex Feb 22 and 27. Would I be around 5 weeks if it was from Feb 27?