every1 suffers from 'mouth discomforts' like this on stimulants. it's part of the whole experience... not being able to eat soilds or talk without a lisp for a few days.
the small white things ur describing sound like uclers. they appear around the sides, top & tip of ur tongue & they r tiny pink bumps with a small white head. they'r extremely sensitive to heat, pressure, touch & foods like salt/lemon etc.
usually mouth ulcers r a sign ur immune system is not workin 100% & ur run down. so if u've been using meth for multiple days in a row & haven't sleep or eaten much, that's ur warning to slow down & take it easy or else u could end up really sick.
if ur tongue is white, swollen & sensitive when using meth it's cos it's dehydrated.
u might find ur eyes, hair & skin also become really dry & can b sensitive to soaps/cleansers, hot/cold, sun/wind, etc. & if u have bad circulation u may suffer from uneven skin pigmentation/discoloration (especially ur hands & face when u haven't slept.)
this is cos meth pushes ur body to its limit & sends u into overdrive. ur heart beats up to 30% faster, ur body temp rises dramatically, ur metabolism increases, u sweat more, ur breathing becomes irregular & shallow & of course constantly move. it's like running a marathon!
all of this takes it's toll on ur body, but @ the time u can't realise.
to b this active u need energy, which we normally get from food, but u've replaced food with meth- which is nothing... so really ur living on nothing!
therefore your body can't function 100% & has to cut back on the little luxuries that protect you- like saliva!
the best way to prevent all this is...
listerine- or a similar anti-bacterial mouth wash. this stuff is the best, it refreshes & numbs ur mouth. try to find one that isn't too strong cos if ur tongues really sensitive it can burn & try rinse ur mouth at least 3x a day.
brushing- goes without saying!
flossing- if ur using meth regularly ur gums start to receide & it's painful. there's nothing much u can do to stop this, just keep them healthy by brushing 2x a day, flossing every night & check-ups @ the dentist every 6-12 months
also i find that using an antiseptic mouth gel (eg. bonjela, sm-33, etc) can temporarly relieve any pain.
other than that drinking plenty of water, sleeping, taking a multi-vitamin, a calcium & a magnesium supplement can help heaps + eating un-processed foods & eating regularly.