Not personally but I have known people with it. It's a bug that loves your stomach, if you have an ulcer it will settle into the ulcer and stop it from healing. I reckon you should go back to your doctor and ask to be retested, either with a breath or blood test, to make sure all the bugs are gone. If they are not I think you may need a longer course of antibiotics or a different type of antibiotic as the H Pylori may have become resistant to the type you have just used. Do you have a stomach ulcer? If so you might want to ask about some treatments for that too, or a test (simple scope test or FOB (feacal occult blood test) to see if you do because this could be why the H Pylori is hanging around.