Weight gain - thyroid tb. : ( : (

Hi. I have gained 25kgs in last 2years. I was very healthy from my day1. I dont even get fever till 2012. I'm single. I'm into IT industry. I have found recently that I have thyroid. I get my periods once in 5 or 6 months. I also have bloating problems, fatty lever. In May 2013 I had collar stud abcses and it got extended to my spine in Oct 2013. Doctors said it was due to tuberculosis. I was under medications for 6months and complete bed rest. Then gradually I have started putting on weight. Though I maintain proper diet also no use. I can't climb steps even 2years back when I was thin. I face breathing issues. I was never in physical relationship. Usually doctors asks this type questions to Check the Harmon levels. Apart from these I don't get early sleep but I wake up late. I also have quiet ofte mood swings. I'm depressed alot about all the above. In my family history I'm the first person to have these many problems. My grand mother's grand mother is still alive and healthy. :( :(