could be worse.
I remember refitting the starter after replaceing the recoil spring (shows how long ago) and driving off.
A bit later bang and the floor jumped a bit but car still drives OK and no unusuall sounds.
A second Bang bump and still sounds OK.
Petrol low so refuelled and would not start. The starter bolts had fallen out. I had put the back in finger tight, the neighbour had asked some question, I helped and forgot to go back to tighten.
BUGGER