Thyroid issues

Long story short about 6 yrs ago I was told I had hypothyroidism. The only symptom I think I had was fatigue... but I was working 2 full time jobs so IDK. A month ago my lab work showed my thyroid levels to be low again, but I actually Lost weight unexpectedly a few months ago and I'm back at 130lbs which is normal for me. Last week my lab work showed to be a bit higher so my new doctor suggested an antibodies test. Has anyone had similar issues? I never gained weight after being diagnosed with hypothyroidism. I easily lose weight when changing my diet and exercising so I'm confused. Do I have hypo or hyperthyroidism, hoshimotos? Or something else?☹