I don't know why I allowed this to happen, but I just a lot on my mind and did not adhere to to all the rules of taking the med effectively. I was taking Synthroid 225 in early morning. Sometimes, I would take it right after a GAs X or something like that and take it with food or other meds. I have diagnosed myself by just reading, going to my Dr. Tuesday. You may or may not relate to these symptoms, but I'll share anyway. A very bad stiff neck on my left side with headaches. Then came the pounding in my ears, like me and everyone else could hear my heart beat, etc. My nerves were ready to jump off a ledge somewhere, terrible. Then I began getting these "sores" in my mouth. Some looked like a sore and some just looked red and scaly skin in my throat area. My Thryoid is out and I have Hypothyrodism . One of the sore actually protruded out on my face and I had to mash the pus out of it myself. I finally went to Dr and she gave me Keflex and Nystatin to swish mouth with. Sorry about misspelled words. It's been about a week and the places in my mouth are getting better, it would hurt if I ate on that side. Has anyone ever had any of these things happen to you?
Didn't take my Thyroid meds right and am very s... - Thyroid UK
Didn't take my Thyroid meds right and am very sick.
My Thryoid is out and I have Hypothyrodism You need blood tests to diagnose hypothyroidism. Have you blood test results to share? A starting dose of 225mcg will likely lead to your symptoms and more. Where have you been reading exactly? Did you share your symptoms with your doctor?
Rapunzel
Someone with no thyroid has to be hypothyroid, by definition. 225mcg Levo might not have been a starting dose, the OP hasn't specified.
willow542000
Sometimes, I would take it right after a GAs X
I have no idea what the sentence above actually means.
Then I began getting these "sores" in my mouth.
Could be all sorts of things causing this, but living with hypothyroidism increases your risk of poor gut function and therefore ending up with low nutrients. Low iron is common with mouth ulcers. Candida / oral thrush is common with hypothyroidism too. You obviously need to get your thyroid meds right for you. But then you also need to optimise your nutrient levels too.
The things you need to know are listed on this British test, but obviously you would need to find it in the country you live in :
off topic, before my thyroid got sick
I am new to the site and do not now a lot about underactive thyroid 
On Sertraline a week now and no better.
so angry can i demand medication change?
My problem with my thyroid meds.
