I'm new to this community because I've had a number of symptoms for a few years now, which I never thought were related until my doctor suggested a thyroid test and I did some research online. The first test showed I have subclinical hypothyroidism with the results: TSH 5.1 (range 0.2-4.2) and FT4 17.6 (no range written on my printout). I was told to retest in 3 months and that test came back normal: TSH 3.5 (range 0.2-4.2) with no FT4 tested (or at least not written on my printout).
I've still been getting the symptoms after the second test so I went to the doctor asking about any other tests and the FT4 result. He said they would have tested for FT4 automatically the second time and there aren't any other tests they can do at the moment but agreed to put me on a trial of 25mcg Levothyroxine for 3 months to see what happens.
I've panicked myself a bit as I started using it yesterday morning and I had my really bad headaches back all day and then today I was sick. I know these can be a side effect of Levothyroxine but also a sign of Hypothyroidism (the headaches is one of the symptoms I get) so I'm not sure what to make of it.
I'm a little worried that with the second result saying I was normal that maybe the first test was just a blip and I'm not hypo. The doctor was happy looking at my first results to trial the Levo and the nurse who took my bloods for the second test is hypo and thought I had it from my first result and the symptoms I discussed. The doctor said that it was the lowest dose so there shouldn't be any problem trialing it.
Should I go back to the doctor after a week if it's still the same symptoms and do I need to retest earlier than 3 months? That seems like a long time but as I'm new to this whole thing and I kept checking with the doctor that 3 months was right I just don't know.