I missed my periods and today is the 15th day of missing. I tested pregnancy multiple times it is showing negative even in the lab pregnancy test. I've take modus and today is the 3rd day of taking it. What would be the reason for missed period apart from pregnancy?

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.