17 days late

Cheyenne

Any women who have gone a long time after a missed period before getting a positive test? My SIL had her last period June 29 and is now 17 days late. Says the only symptoms she's really been having is occasional puking and nausea, and being very tired. But she's been getting negative tests. Her cycles are 28 days and her periods usually last a week. If you've experienced this, please leave a comment with what ended up happening!