You should check.

Generally doctors only check TSH levels. TSH is Throid Stimulating Hormone which is put out by the pituitary gland in the brain.
Sadly it's a shockingly poor test and if you have Hashimoto's (the most common form of hypothyroidism), or perhaps nodules on the thyroid, or perhaps thyroid cancer, or something else, the TSH levels can appear to be within the 'normal' range, which the doctor then reports back to you that you're fine. (ha ha)
Doctors tend not to do FT3 and FT4 tests because they cost more ... but if you're having health issues, it would be good for you to check out whether they've done it or not.


Of course, I am not saying you have a thyroid issue at all but it's just this thread popped right out at me, so I thought I would put it out there.
I've struggled with thyroid issues for may years myself, though finally have good doctors and good meds to treat it.
Apologies if I seem intrusive and I hope I'm not repeating things you already know.