Hi @Carebear
I think it's awesome you have ducks. We 'kind of' have ducks, in that we fed one about 4 years ago when it visited our pool and it just sort of adopted us. It waits by it's bowl and will come up to us when we appear. If i'm in the outside room and I leave the door open, it will come in looking for me to let me know the bowl is empty.
A couple of times a year we get ducklings for a day or two before they head off to where ever they had off to, following mum. They are fragile little things. We do our best for them, without interfering too much but they are fragile and do get separated from their mum so easily. It's probable why each lot is about 8-12 ducklings, because they dont all make it.
About your confidence, i'm not sure you need to rebuild it, but to try and not let abusive behaviour affect it. In response to @Ru-bee, you said that you feel safe most of the time. I would say most, isn't enough... you deserve to feel safe in a relationship all the time. I'm not sure by 'most of the time' if you just mean all the time except for this recent outburst or behaviour like that isn't new.
I wouldn't try to tell you what to do, nor should I. But I would suggest that you do need to think about what is best for you... your happiness and your safety. This sort of behavior is not acceptable and you should at the very least place some boundaries that it's just not acceptable.
So don't feel like any of it is your fault, and don't tolerate anything that makes you feel unsafe. Be kind to yourself and we're here if as @Ru-bee also suggested reach out to any of those supports available to you if you feel it would help you.