AIO? Gf talking to me

AIO? I have been dating my girlfriend for a few years now, and I am getting drained. I never fight with anyone, I never argue with anyone, I am very very easy going and hate conflict. However it seems the smallest things turn into fights with her. My main concern is just how I am spoken to about everyday things, her tone always feels argumentative and that I am getting questioned and what I am doing it wrong. It is this way with everything I do. If I leave my house to workout she will ask why I did that and why I didn’t do it at a certain time, or why I want to workout today and not the day before. Or if I make plans with a friend it will be bad because I never make plans with her, and she was going to ask me to hangout, and I don’t even like hanging out with her, and that I shouldn’t make plans without asking her first.

I know all of these things are wrong. But I need opinions on if even our daily conversation seems draining to others?

For context I am building a home. I work in sales so a large portion of my income is commission which can’t be used on my building loan (it can be for the home loan itself) so I asked my father to co-sign the temporary building loan.