You can't tell much from palpating your thyroid unless your have a goiter which is a sign of hypothroidism. The thyroid hormone feedback system is very sensitive and can get screwed up.
Major symptoms of HYPOthyroidism: lethargy, fatigue, weight gain, goiter
Major symptoms of HYPERthyroidism: dry skin, tachycardia (increased heart rate), distal eyebrow hair loss, general hair loss, jitteriness.
You need a thyroid panel to determine what is going on, specifically a TSH assay. T3 supplementation can really screw up your thyroid if not done carefully, or even if done carefully.
Hope this helps.