Tillytums You have a GP who doesn't know how to treat hypothyroidism I'm afraid.
You say you were diagnosed 2 years ago, have you been taking just 25mcg Levo in all that time?
It's normal for thyroid tests to be repeated 6-8 weeks after starting Levo, a dose increase of 25mcg, another test 6-8 weeks later, another 25mcg increase, etc., until symptoms disappear.
Have a look at ThyroidUK's main website > Getting a Diagnosis and Starting Treatment:
Scroll down to "If you are diagnosed" and "Hypothyroidism"
It would be helpful if you could give us the reference ranges for your test results, but we can see TSH is too high and your free Ts are probably low in range.
Also from Thyroid UK's website > About the Thyroid > Hypothyroidism > Treatment Options:
"Levothyroxine (T4): The main treatment for hypothyroidism. Treatment is usually started at either 25mcg or 50mcg per day, depending on the severity of the condition. Testing is carried out at various intervals and dosages increased over the next few months until the test results show within normal range. According to the BMA's booklet, "Understanding Thyroid Disorders", many people do not feel well unless their levels are at the bottom of the TSH range or below and at the top of the FT4 range or a little above."
That booklet is available from Amazon for £4.95 and well worth buying so you can show your GP. It is written by Dr Toft, past president of The British Thyroid Association and leading endocrinologist, and I can't see how a GP can argue with a book published by The British Medical Association.
Also - Dr Toft states in Pulse Magazine,
"The appropriate dose of levothyroxine is that which restores euthyroidism and serum TSH to the lower part of the reference range - 0.2-0.5mU/l.
In this case, free thyroxine is likely to be in the upper part of its reference range or even slightly elevated – 18-22pmol/l. Most patients will feel well in that circumstance.
But some need a higher dose of levothyroxine to suppress serum TSH and then the serum-free T4 concentration will be elevated at around 24-28pmol/l.
This 'exogenous subclinical hyperthyroidism' is not dangerous as long as serum T3 is unequivocally normal – that is, serum total around T3 1.7nmol/l (reference range 1.0-2.2nmol/l)."
You can obtain a copy of the article by emailing firstname.lastname@example.org , print it off and highlight question 6 to show your GP.
When having thyroid tests done, always book the first appointment of the morning, fast overnight (you can have water) and leave off Levo for 24 hours. This gives the highest possible TSH which is what is needed when looking for an increase in dose or to avoid a reducion. Also, it gives continuity of conditions so that accurate comparisons can be made in the future where results and symptoms are concerned.