Hi,
I suspect a bleed from the upper portion of your gastrointestinal tract causing black stools and bile rising up your food pipe (
esophagus) giving you that sour taste. You may have a peptic ulceration which maybe the cause for your problems.
Despite using the Pantop HP kit and finishing the course, recurrence can occur. You would need a repeat breath urea test to confirm eradication of the bug: H.pylori.
The test is usually repeated 4 weeks after completing the course. If I was your treating physician, I would check your
Complete Blood Count, serum electrolytes, liver function,
kidney function, schedule you for an upper gastrointestinal
endoscopy test (to visualize the upper portion of your gastrointestinal tract), and repeat the
urea breath test.
In the meantime make sure you are not dehydrated by taking oral rehydration salts and water. I encourage you to visit your physician as soon as possible.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr. Sanjana Nagraj