Sorry to hear of your worsening health problems.
Hashimotos is a progressive auto immune disease that attacks the thyroid until it becomes atrophied. The thyroid hormones that your body requires in order to function correctly will need to be replaced with hormone replacement medication, usually Levothyroxine.
If enough medication is not given, the effects can be far reaching as thyroid hormones are used in every cell in the body. Usual symptoms are fatigue, weight gain, hair falling out, dry skin, loss of outer third of eye brow and many more.
However many members also report some very strange symptoms but most resolve once adequately medicated. I myself had all the above as well as a hoarse voice, a violent and prolonged dry cough, blood in my urine and high creatatine levels indicating kidney problems. Soon after taking Levothyoxine, all these symptoms disappeared
Are you taking medication yet Sofiefisher?
As previously advised you will need to post your thyroid hormone test results complete with ranges for members to comment. All your symptoms sound hypothyroid but without results it is hard to advise.
GP's are not thyroid experts, they are general practitioners and often a doctors
"normal" may not be the same as what we know is to be enough.
People who have an auto immune disease are more likely to have another such as rheumatoid arthritis. The higher the antibody count, the more vulnerable you are to the auto immune system attacking other parts of the body.
Many have found a gluten free but nutrient dense diet helps to manage a high antibody count.
It is also imperative to have optimum levels of Vit B12, Vit D, Folate and Ferritin. Ask your doctor to test these and supplement any deficiencies.
Remember to post results and believe you will get better with the correct treatment.