And I'm still exhausted and getting lots of bazaar symptoms. My levels came back normal last month so I have no idea what to do.
It's still impossible to lose weight, my feet ache and feel like walking on glass on a morning. Palpitations, breast pain and feeling drained. Please help.
Lupinx,
Normal is a very broad range. Please ask your GP receptionist for a print out of your results with the ranges (the figures in brackets after results) and post them in a new question for comment. You don't sound as though you are optimally medicated.
Never accept 'normal' from the doctor when dealing with blood test results. Within the 'normal' range we may be but we feel anything but normal. When diagnosed and on treatment, we have to have a TSH around 1 or lower with Free T4 and Free T3 towards the top of the range. Not a TSH somewhere in range unfortunately doctors are poorly trained as are many Endocrinologists in the diagnosis and treatment of thyroid gland problems.
Get a copy from the surgery of your latest results each time you have a test, with the ranges (some surgeries ask for a nominal sum for paper/ink) and post on a new question.
Third blood test in 4 months
Weight Gain on levothyroxine after 18 months 
2 months on levothyroxine and no period
Levothyroxine /4 weeks/ period?!
Still not 100% after months on levothyroxine
