Can you tell us more specific information, as there are very specific tests for both conditions, as well as symptoms.
I wanted to make sure you have informed your doctor that the treatment is not working for you, to due unwanted side effects, and your doctor can prescribe other types of treatments (or, the same drug under a different brand) that may not have such severe side effects. Please call your doctor first thing Monday to update him/her on your treatment!
You said your doctors told you that you have hypothyroidism. Do you have the test results, and can you tell us what the results indicate from your lab report?
As you know, there are similar symptoms shared between hypothyroidism and hyperthyroidism, and it would be helpful to hear from you what symptoms you are actually experiencing, as every person experiences these two conditions differently.
Lastly, you may be interested in reading this woman's experience that she shared in an article with EmpowHER: Hypothyroidism to hyperthyroidism.