Period 2 weeks late, having brown discharge past 5 days (off n on) neg test 1 week ago, cramping off n on, what could this be?

Late period: Brown discharge is scanty old blood that turns brown because it has been staying in the uterus. The normal hormonal cycling between the brain and the ovaries has been thrown off. Listen to you body. See if you can make changes to enhance health. Avoid tobacco, alcohol, eat healthy, get a good night sleep, move through the day, and de-stress. Read kelly mcgonigal the will power instinct, 2012.