Suggest Remedy For Anxiety ,depression And Sleeplessness

I am 22 years old. In 2010, I had my first child. When I was pregnant; I lost my sex drive. After having my child, I slowly started to gain it back. Then in Dec of 2010, I had the Paragard IUD inserted. My sex drive went away. I have been battling with depression and anixety since Nov 2010 and til now. In 2011, I had my gallbladder removed. I have now been fighting with sleep. I will sleep for 10 hrs or more and feel like I never slept. Then sometimes I cant sleep until 3 am and will wake up 5 or 6 hours later. I dont work and only take care of my daugther everyday. I am obese. I am 240 pounds and have gained 100 pounds since 2010. Lately, my menstrual cycle has been very off. 5 weeks between each period and im very heavy and have alot of pain and midol or any other medicine doesnt help the pain. I am deciding to get my IUD taken out and go birth control free because I am not having sex anyways due to my no sex drive. I was wondering if I should get my thyroid checked out? Or if it could be something else? I am not on any medication and have never taken any medications for my depression and anixety. I only have my copper iud.