I haven't been to a doctor in about a decade. When I switched to ecigs I had some "wacky" things going on myself. Just strange feelings more along the lines of sensitivity/allergic type stuff which all seems to have passed and I attribute to withdrawal from the chemicals in the cigs combined with the new absorption method for nicotine combined with the completely foreign vapor I was inhaling and having to metabolize. I was able to determine on my own that the severity of those "feelings" was probably not life threatening. My personal history with my body leads me to believe that odd feelings sometimes happen and they always seem to go away and I live another day with no issues. This may not be the best approach for most people. If I were to give advice to someone else experiencing "odd" or "wacky" feelings (especially someone with a known condition) it would always be to see a doctor or visit the ER as soon as possible.