Last period started march 26th. light pink bleeding april 10th. almost 4 days late. three negative pregnancy test. am i pregnant? or what? help:)

Tests are accurate: In a woman with regular periods, some causes of a late period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (like birth control pills), hormonal imbalances, etc… Seeing a doctor is a good idea if symptoms are persistent, recurring, or worrisome. Home pregnancy tests are very accurate by three (3) weeks after sex.