30 Thyroid Symptoms That Are Too Important to Ignore

13. Your Periods Are Irregular or Have Stopped Altogether

If you've noticed that your periods are lighter, shorter, or not coming at all, your thyroid could be involved. With hyperthyroidism, your menstrual cycle can become irregular or stop altogether, which can be worrying if you're trying to conceive. Unlike hypothyroidism, where you might have heavier and more frequent periods, an overactive thyroid can lead to fertility issues.