I'm 17 days late. have some symptoms but 4 negative home test. feeling sick last period started 2/27/15 its now 4/14/15 can i still be pregnant. ?

Irregular timing: of ovulation, is most likely reason, delayed or absent ovulation will cause you to be late. Of course even late ovulation can achieve a pregnancy if intercourse occurred at at time close to ovulation. See your doctor for testing and treatment, to correct ovulation issues. Polycystic ovarian syndrome/insulin resistance is the likely the cause.