It sounds like a lot of encounters you had with women in the past weren’t real women; they were misandrists. Your mother wasn’t a feminist, she was a misandrist. Real feminists would want a man to understand they’re not out to treat men like shit but be on the same playing field.
So as you said, with changing your son’s nappy, it shouldn’t be a big thing that you do it. It should be that. Parenting. Any feminist would agree with you on that. Same with housework.
Any woman that claims feminism and treats all men like they’re bad people is not a feminist but a misandrist.