Update for those interested:
Just got back from my 2nd visit, XRay this time. At least the prob isn't as bad as first thought, just deep decay (I guess, from translation), so they were having fun poking in and out with those nasty little screw things that really don't feel right when coming out

! Put 'medicine' (their words) inside, and blocked it with a temp filling for 10 days then go back to check and get the real deal.
Took me off the antibiotics they originally put me on, unless I feel pain (I feel....itchy....for want of a better word!) but I may take some tonight just to be on the safe side.
2 XRay today & treatment cost 78Y

. Will also get a general checkup and clean when this part's over.