Hi totolost,
I too am no doctor and of course it’s always a good idea to rule out the contributing factors that have the most serious implications. That said, I have to disagree with those that feel that there is ‘no way’ that your issues are due to e-juice. From my own experience, I have to disagree with the opinion that the juice absolutely cannot be the cause. While I am a mild sufferer of IBS, I have experienced a host of varying, different issues/side-effects from e-juice alone. My feeling is that it’s not always the VG or the PG that’s the culprit, but rather the flavorings? or other additives? that seem to cause the issue. I say this because after trying several juices from known-to-be-good, reputable juice manufacturers, they all had widely varying effects on me. And even though many claim to only contain this or that, I still feel that many are 'doping' theirs with additives to make them produce more vapor, throat hit, flavor enhancement, etc.
So in my mind, and in my experiences, it’s all about the particular e-juice you’re using. I don’t feel it’s like just picking out a particular flavor or brand like you would with cigarettes, which seem to all have the same effects on most everybody. Rather, think of it like the wild, wild, west out there. Many are out to make a buck and not all are concerned with any side effects, or have done any real, comprehensive testing. Also, there's not a lot of studies being conducted in general, so we don't really know yet, what is floating around out there and all of the effects of all the ingredients in them. I would try the cleanest e-juice you can research to be found, with the best, most serious manufactuing processes and/or certifications.
Just like so many other vapers, I have spent a ton of time, effort, and $$ researching things and have had to find my own way. Or at least ‘what works for me’. Not sure if it would help or just add confusion at this point, but if you can stand to read through my story, you can view it here:
http://www.e-cigarette-forum.com/forum/health-safety-e-smoking/331474-pg-vg-side-effects.html
If we all work together, we can make this work. We’re all worth it and it’s ‘our’ thing. I hope you can find ‘what works for you’.
Peace