Hello. Thanks in advance for any advice you can give and apologies for long post. This is all new to me so i have little knowledge of thyroid ...I've recently been to gp as I thought that my neck looked a little swollen at front. She sent me for bloods and booked ultrasound but didn't think neck swollen, more because I said I was more aware of swallowing. TSH came back as 23 !! but she didnt tell me other results. She wants to repeat bloods in 4-6 weeks but says on these results I'm underactive and will need medication for life if bloods still the same. Back story to this is that i take a lot of supplements for breast health due to years of fibro cystic condition. I have used Iodoral (iodine) 12.5mg for about 5 years to support this and last blood test in 2015 all normal for thyroid. I had a breast scare before Xmas and upped my iodine to 25mg for a couple of weeks...thinking I had been on it long enough for it to be safe and my body be used to it. I stopped taking the iodine as soon as i realised the possible connection and the bloods were done about a week after i stopped. Could this have caused these recent symptoms and blood results ? I'm really scared that I have irreversibly damaged my thyroid. Im now aware of every swallow, have intermittent sore throat and ears feel funny...but i am extremely anxious about it and know how much I can create symptoms... as i said to gp i have no other typical symptoms of hypothyroidism. Please can you advise ?? Many thanks.