You do not have any medical issues. All your issues may be psychological. The urine color is clear since you are drinking more water, and that is being excreted normally.
The burning sensation may be associated with gastritis or gastric reflux disorder, which can be relieved with the use of antacids and medications to reduce acid secretion (Omeprazole) which are available over the counter.
If they do not subside, consult your doctor and seek a proper medical opinion.
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