hi ... i had my period on 13 march last month . then on 25 march i and my boyfriend happened to have had manual sex , genitals were exposed ... no intercourse ... dis month my periods were late ... so i was tensed .. i have no other symptoms of pregnancy... but still dis morning i ate a vitamin c tablet to induce menses and in with in two hrs my periods started. . . but i am still worried cause i heard about fake periods in first month of pregnancy ... am i pregnant ..??? and ya last month i have had lots of physical exercise please help me