Help , i'm suffering

Hello

I'm 23 male. 

I have been suffering from a lot of symptoms :

Can't lose weight, cold, easily getting tired, hair problems, sleepy, muscle cramps, brain fog, hard to concentrate, low or no interest (the worst), lack of energy , low sexual drive and many more.

Note:

 1-most of these symptoms wax and wine during the day ( worst in the morning usually ).

2- I take high dose b12 supplements daily otherwise I get very low b12 levels although my diet is fine.

My family history is significant, all my sisters and my father and almost 50% of my extended family have this disorder and

My lab results :

TSH = 2.15 uIU/mL (0.27 - 4.0)

Free T3 = 4.64 pmol/L (3.1 - 6.8)

Free T4 = 12.8 pmol/L (12-22) 

Currently, I'm on antidepressants to treat my lack of interest and low energy and drive ( the main symptoms)  but it doesn't help actually. ( I have tried 4 types so far)

Please help. 

So your doctor is treating you for depression rather than hypothyroidism! ! Have you told him your family history? ?