I have never missed a period since I started my period at 13 unless I was pregnant. My period is 16 days late and no positive test my husband and I have been trying for about a year to ttc. I have four other children but this would be my husband first and he really wants a baby. Called doctor and she says wait and see if you miss your next period I'm like really I know my husband will be asking soon because he keeps track of my period also so I'm really frustrated right know. Just need to vent