Based on your Free T4 and mild thyroid enlargement enlarged thyroid, you could definitely hyperthyroid. I agree with everyone else. You should probably see an endo. When I was hyperthyroid I had some of the symptoms you described above. Also, hyperthyroidism can make you anxious.
Also, it couldn't hurt to have your antibodies checked (TSI, TPO, and Tg), especially given that others in your family have thyroid problems.
Post Edited (Jenn1202) : 11/17/2014 11:14:00 PM (GMT-7)