Yeah, I'm leaning even more toward something with the Thyroid now that I read your last post.
Be interesting to know what your new tsh level will show. More then likely it will show in the normal range but that does not necessarily mean you are balanced yet. I'd got to endoctrinologist and be double checked. It could still be you Thryoid even if you are showing in the normal range but doctors are reluctant to up the dosage (especially GP's) for fear of overdosing you and it can be easily done. You may need to be on .75mg instead .50mg.
My sister was one of those people was running around with all the symptoms but blood work was showing her in the normal range. After year and half she finally went to and endoctrinologist he put her immediately on .75mg and she's still on it (she had a normal tsh). My tsh on the otherhand was 11.93 and I was only put on .50mg. am still on it and doing fine. A lot of people are walking around with blood showing them in normal range and they aren't. It takes an endo. usually to get them diagnosed and treated. What dosage a person needs is not that black and white or my sis would be on .50mg. and I'd have been put on .75mg. A man I work with had an initial tsh lower then mine at 8.3 and he was immediately put on .75mg. Amazing.
As far as the symtoms for hypothyroidism you've read up - so you know there are many of them. I had several but not all and you don't have to have all to be hypo.
I just instinctively feel that some how that curious little butterfly size and shaped but powerful organ the Thryoid is playing in this.
If not the Thyroid then something else in your endoctrinal system which includes your pitutary gland, your adrenal gland and another gland or two. They are all hooked together in what is called the waterfall effect.
Please keep us posted for sure.
P.S. I was also kinda thinking inner ear infection but the stomach thing doesn't fit - so I'm back to the Thyroid cause it can definetly fit in that area.