I'm sorry for the delay. The snow storm has caused problems here....
What is your height and weight?
What is your diet like? (ie how often and what times of day you eat compared to your sleep cycle...)
How much do you drink per day?
How long have you had the bronchitis
Has the antibiotics helped?
Where are you trying to change your pH? blood? urine? lungs
The fullness near your thyroid is possibly a problem with your thyroid itself that should be evaluated with a blood test. Another possibility is that there is some extra fat there (though from your description of your current activity this does not seem to be the case). Most often this occurs when a person GAINS weight. The extra fat stimulates the nerve that is near the thyroid and gives a sensation of fullness.
The need for taking deeper breaths right now sounds like it could be related to your bronchitis.
Depending on the timing of the need for deep breaths, and the frequent urination, it almost sounds like some type of congestive heart failure. That is when the heart does not pump as efficiently because there is fluid 'backup'. Part of the treatment for that is to give the person medications to increase urination - which in turn makes breathing easier. This can also happen from high blood pressure
Although the things I mentioned above are possibilities, they are quite unlikely in a person your age.
Lastly, herbs are not regulated by the FDA and therefore can have many things in them that are unsafe, or in unsafe quantities. That is something that I cannot really address here.
It sounds to me like you really should have a very thorough workup from your primary care physician to see if somehow all these symptoms are related.
If you have any follow-up questions please feel free to ask them.
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