Should be fine -- anything above 95 octane will run great. In fact, people quite often fill them up with 98 octane here, just to -- they say -- clean it out a bit (it probably does not clean anything, but it does absolutely no harm at all). If you've put lower octane fuel in, just top it up with higher octane stuff it'll all mix together.
The only thing that can cause problems -- if you can still get it in Romania -- is leaded petrol, in which case I'd be inclined to put unleaded in as soon as you can. But leaded will not hurt the engine, although it will eventually shorten the life of the catalytic converter.
As Arc says below, leave it in there. Nothing bad will happen, I promise!
Lume, lume............ eh?