Hi Charlotte and Hai, I've been there. It's worth talking to Women's Aid just on the basis of your doubts. You're not setting in motion something that you won't be able to stop. WA won't come and forcibly evacuate you! You can just touch base with them now and then for a reality check.
I strongly recommend keeping a diary of these events. I found it very hard to remember the details of violent incidents afterwards - it just seemed to leak out of my head. Keep a diary so you can see if there are patterns. See how often things happen.
Do some reading - "Why does he do that?" by Lundy Bancroft is invariably recommended here, because it really is an eye-opener.
It is very, very common for abuse to get normalized and downplayed by the abuser. Charlotte, you don't have unusually high expectations to think it's out of order when someone throws something at you and threatens to hurt you. No, not a normal fight!
Keep a record, read, talk to WA. Gather information about your own lives. It's scary to acknowledge what's going on, but there comes a time when you have to accept your own knowledge.