Hello, My wife got pregnent when we had unprotected sex only on 26 march, her last period date was 28 feb, she missed her period and waited a week then found her pregnent, we had two beta hcg test and doubling count confirmed. Now my question is how can calculate the date or age of pregnency? In genral its start from LMP which was 28th feb but we did not had sex on ovulation time (13-14 march) we only had sex on 26th march.. so how we can calculate her pregnency age from LMP? We need to go for her first ultrasound to confirm her pregnancy? Location and other things? When should we go? Hcg count on 8th april -115 10th april - 330 LMP - 28 feb Intercourse - 26th march