Positive manifestation

They include all findings which play conclusive and confirmatory in diagnosing pregnancy.

Positive Urine or serum pregnancy tests to detect human chorionic gonadotropin (hCG). hCG is detectable in the serum of approximately 5% of patients 8 days after conception and in more than 98% of patients by day 11. 

Evidence of gestational sac or fetus by Obstetric Ultra Sound.

Perception of Foetal heartbeats in advanced gestational age.