A urine
pregnancy test done 17 days after a missed period is usually reliable, so this negative result makes pregnancy unlikely, though repeating it is reasonable if your period still hasn't started. Poorly controlled
thyroid levels are one of the most common reasons for periods to run late, since thyroid hormone directly affects your cycle.
Next Steps
Repeat the urine test after another 3 to 4 days if your period still hasn't come, and get your current
TSH level checked since your tablet dose may need adjusting. If your period doesn't return within a week or two, please see your gynaecologist.
Health Tips
See a doctor sooner if you notice pelvic pain or unusual bleeding.