Hello! I been feeling unusual symptoms such as fatigue, a bit depress, and have gaining some weight recently (even though I’ve been exercising). I been doing a bit of some research to pinpoint what’s...

Hello! I been feeling unusual symptoms such as fatigue, a bit depress, and have gaining some weight recently (even though I’ve been exercising). I been doing a bit of some research to pinpoint what’s wrong with me, and I believe I am suffering from medical condition called hypothyroidism. What are some of the signs that I may suffer from hypothyroidism? Should I go see a doctor? How could I be of any help to my friends to identify weather they could also be suffering from hypothyroidism, and what advice should I give them?