#asktheexperts my hpt shows positive on 13th august but today 16th of august doctor checked on ultrasound nothing shows except thick endometrial and upt which was done in doctors lab on preganews was negative. Again I came home and did hpt again on pregakem which shows positive( two dark lines) what does this mean? Why I get negative in doctors lab and positive at home and scan also didn’t shows anything . My last period was on 15 July. Plz any gynaecologist help me in this plz