The thyroid can be self-checked by standing in front of a mirror to check the base of the neck. Now tip your head back and drink water. As you swallow the water, look at your neck and check for any bulges or protrusions in the area where you swallow, and do not confuse this with your Adam's apple. Then use your hands and slowly feel the area over your thyroid; if you feel any lumps or bulges in your throat, make an appointment with your physician.