I had those as well before I was diagnosed with Hashimoto's Disease. Diagnosing it is often difficult because the symptoms can be so random and seemingly unrelated and only make sense after the diagnosis. I even had the tilt table test done at Mayo and that proved to be no help other than to say I had Postural Tachycardia Syndrome. I can only say ask you doctor to specifically test for the Thyperoxidase level. Only that will tell you if it is in fact Hashimoto's. I only found out that I had it because a cat bit me and the bite became an infection in my blood within 24 hours that hospitalized me. While I was an inpatient at that hospital a doctor who wasn't assigned to my case and didn't know me happened to look at my chart at the desk and came into my room to ask if I had been tested for Graves Disease. I told him I'd never heard of it and he told me to go to an Endocrinologist. Don't give up hope for an answer. I literally stood up in front of my Endo and did a dance of joy when he gave me the diagnosis, thrilled to finally have a disease with a name because if it had a name I could do something about it and I was not a hypochondriac. Having been active in my system for 7 1/2 years before I was diagnosed it caused some permanent damage like insulin resistance but all i all I am 75% better than I was before. I hope you find an answer soon.