“confirmation of pregnancy”
signs that cannot, under any circumstances, be mistaken for other condition, and are evidence that pregnancy has occurred
positive sign
through a fetal Doppler or a stethoscope can be heard or auscultated.
Fetal heart rate
Recognition of the embryo and fetus most any time in pregnancy by sonographic techniques
Ultrasound
perception of active fetal movements by examiner (after 20 weeks, age of gestation)
Fetal movement
What are the 3 positive signs?