Hi, i m 22 years old. My period was on 2 feb and i had sex after 14 days of my periods that is on 15 feb, i found also yeast infection soon after sex from the other day. . And i cured on yeast infection by consulting doctor tat is by oral medication. . But i missed my periods . . N after four week of sex tat is on 16 march i m suffering from vomiting like nusea. .i will do the test but still want to know from you. Is this sign of pregnancy.??