Luckily, a woman (slim build, dark-haired; maybe late 30ies--early 40ies? IIRC we were by the back platforms somewhere, I remember wood) noticed and helped me, first to a Dixi. I told her she didn't need waiting for me, as it was taking its good time in there ... however she stayed on, on her own initiative, and eventually we reasoned forth it would be a suitable action to call for the medics after all.
Said & done. I got to ride the lovely Fusion ambulance (and also received great care at the actual Erste Hilfe station, thanks also to you). Getting out of the Dixi I was so weak and wobbly I could barely walk, and it took all I had to get into the car, even with support.
With this I'd like to express my utter gratitude to this unknown guardian of mine, in hopes that she, or anyone knowing her/recognizing the event, might see this, as I didn't manage thanking her for her attention and sound judgement when on-site, and never saw her again.