Irregular periods can also be the sign that you are suffering from thyroid. If you notice your periods are very long or short, heavy or light or extremely irregular then it's time for you to consult your doctor or get your thyroid checked.
6. Feeling too hot or too cold
If your body is producing too much thyroid hormone, your temperature can rise, leaving you feeling frequently warm. Similarly, an under-active thyroid can make you feel colder. It can often take just a small change in the hormones produced to have a major impact.