This may seem a strange question, but after 5+ years dealing with an Achilles issue that won't go away, I recently read some research stating that injuries/muscle problems that won't go away can be caused by hypothyroidism.
In recent months I've also had some weight gain (never had a problem with this before) with no changes to diet or exercise level, and unusual levels of fatigue (difficulty staying awake, lethargy, lack of energy).
There is at least some history of thyroid trouble in my family as well.
I'm sure others here have had experience with thyroid problems: is what I'm describing matching up with what would be expected? If so, what do I need to get tested? And if the tests come up positive, what is the solution?