Hi Dr, my 1st day of my last period was feb 2 and now I have sore breasts and my pelvis feels funny. I've urine tested twice but results are negative.

Maybe not preg. Pregnancy is a common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… If worried, one can retest 1 week after the first test. An Ob-Gyn doctor can help if symptoms persist.