Hi! I am almost 5 weeks pregnant..Had my urine hcg positive..I have history of pre-eclampsia during first pregnancy..have a history of early miscarriage 6 months back..now the urine test shows a faint line..and on usg there is no sac seen but endometrium is 18mm. I am experiencing nausea and weakness..my doctor gave me loprin and duphaston..what should i do..because urine preg test is positive every time..but scan shows nothing..i am not sure about my LMP exactly I am confused between two dates