Age 40, contraceptive for 14 years with 2 kids. i have never missed a period until now. i am 38 days late. 2 pregnancy test, negative. pls 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 (such as hormone pills), hormonal imbalances, being near menopause, etc… Seeing a doctor is a good idea if symptoms are persistent or worrisome.