answered question 4/26/2010 I Am 1 Week Late For My Period Could I Be Pregnant? HI I'm 21,with a 2 yr old and a 10 mth old.And I'm a week late on my period and I missed my pill sunday too.Also my lower back and my stomach has been hurting for bout 4 1/2 wks now.Ive been eating a lot too.What does that mean?