Rupturing of hymen or bleeding is no longer ways of checking a woman's virginity. A woman's hymen can rupture due to numerous reasons, extensive exercises, and horse riding, riding astride on two wheelers, or even dancing.
As per study, only 40% of women bleed during their first sexual encounter and mostly women can easily hide away their virginity.
According to Hindu mythological facts (Mahabharat), Once Kunti gave birth to son 'Karna' prior to her marriage and swept him away easily in river Ganges to hide this fact from the society. Many years later during the Mahabharat fight, Kunti's five son's Pandav (post her marriage to King Pandu) came face-to-face with Karan and just as they were about to kill each other, Kunti intervened and revealed to Pandav's the truth about her eldest son Karna.