My thyroid function test
Free T3 =2.86 (2.65-5.09) pg/ml
Free T4 =0.90 (0.93-1.70) ng/dl
TSH=14.64 (0.25-5.80) ulU/ml
3months ago My Tsh was 0.67 when I was taking 75 mcg thyronorm as I started feeling low heartbeat after taking medicine I started taking 50 mcg thyronorm ,so what should I do now? I am just 19 years old.
Put the dose back up to 75 mcg, you are very hypo. That is why you have a low heartbeat, not because of the levo.
Have you had your antibodies tested? You could have Hashi's, which would be why your levels jump around. If not, it would be best to get them tested. 
Yes I had it tested 5 months ago and the doctor has diagnosed me with hashimotos .the point is that , when I was having 75 mcg thyronorm after some months I started having low heartbeat , so I dropped to 50 mcg now Tsh has levelled up. so now I will take 75 mcg but after regular taking 75 mcg If I ffelt low heartbeat what should I do? I am also having chronic pharyngitis for the last 2 years
The low heartbeat was because you weren't taking enough. Not because you were taking too much.
You should have been retested six weeks after you started the 75 mcg and your dose increased to 100 mcg. If you have Hashi's, then your levels are going to jump around. But, do you always get your tests done at the same time of day? Because, if not, you can't compare them. TSH is highest early morning, and drops throughout the day.
Sorry, I don't know anything about pharyngitis. But it's more than likely due to your low T3.
Thankyou very much for replying.Yes I always get it tested early in the morning So what should I do now? And in what time interval should I get it tested?
Get retested six weeks after the time you went back to 75 mcg. Testing should be six weeks after any change in dose.
Hashimotos 
Hashimoto 
Hashimoto's 
