Re: choaking in the neck throat
Whenever the tests show nothing, you should assume the test results are correct but that the people looking at those results might not have the ability to read them correctly. It happens with thyroid disease all the time.
What thyroid tests did you have? If you have TSH and free T4 results, you can post them here - with their lab ranges - for interpretation. If you have free T3, too, that's all the better.
Did a doctor feel the thyroid area of your neck manually while you swallow to check for enlargement and growths? Not all MDs remember to do that exam, or even know how to perform it properly.
Other than thyroid disease, one thing that can cause the symptoms you describe is acid reflux. If the thyroid is eventually completely ruled out, you should undergo reflux tests to see if that might be it.