Unpleasant situation - not sure what to make of it

[LemonMeringueThreePointOneFour]

I'd like some opinions on this scenario as it's playing on my mind.

A few months ago my ex and I had been at the pub and he had drunk quite a lot (well over a bottle of wine, plus a pint). When we got back to my flat he dragged me outside (into the communal area) threw me onto the stairs and pinned me down. I wasn't quite sure what he had planned, but I fought him off and we went back inside where he calmed down.

Was this assault? Just a bit of rough and tumble and nothing to make a fuss about? Something in between?

I don't want to make a mountain out of a molehill, but would appreciate people's thoughts. Thank you.

One of them is the main door, shared with several other flats. He won't have been able to get copies of that one.

Then you may need to inform the owners/management company that someone has keys.
It's a security risk. When I lived in a flat it was in the rules.

I have my keys back now. He refused to speak to me, but I guess that was probably a good thing.