http://www.e-cigarette-forum.com/fo...hen-quitting-tobacco-changing-ecigarette.html
This is a link to a list of common symptoms involved in the transition to e-cig...
Many of those may be associated with tobacco abstinence...
Some with 'adapting to vaping...'
Drinking water helps... For the most part.
And while a minor group of symptoms sound natural, once you are done with the transition process you should be ok. Nevertheless...
Many of the times the symptoms of too much/ less nic may be similar, as in abstinence and OD are similarly manifested ... So you should be careful and lower your nic or vape for shorter sessions (sometimes we do not realize and we do take a lot of nic...). Remember each person's organism is different and the 'magic formula' when it comes to the nic level is to be found by each one. 1,8% nic may be way too much for many if you chain vape.
Another thing you should take into account is that as we vape we DO certainly go for a big new 'effort' much more 'intense' than with analogs; we suck for longer periods, and this could even translate into being more tense physically, and may lead to headaches, and many other symptoms in return to being sucking up this new way which involves much more 'tightness', pressure and energy, mostly when starting...
Since you have woken up this way sounds like it is not OD, mostly maybe abstinence from nic-IMAOs which may have those symptoms according to some doctors. Then again, it could also be associated with the quitting process.
Also, take into account that many of us are a bit hypochondriac and this could translate into, or intensify these type of symptoms, also possibly since being away from the chemical and anti-depressants found in tobacco and thus in abstinence; together with the typical instinctive "fears" associated naturally with a 'new thing', may very well result in "paranoia" and in very real physical symptoms.
It is very common to be doing too much nic at first !!!!!!
Lower your nic and move on from there... Eventually, increase the level...
Also: remain calm... Trust me...!
=)