There’s a reason by with psychiatrists can’t diagnosed AsPD before 18.
An adolescent can show defiant behaviours and feelings as a natural development process to mature.

The only fact that you are worried about not being a normal person in relation to empathy gives me a motive to trust you. Having this empathy or not.

It’s normal we don’t like people yelling at us, and much less, a mother, who we supposed to trust. Think that maybe your mother has her problems and having a hard situation so she needs you to help her a little. Tell her that she can count with you but that you feel very annoyed when she yelled at. Show her that she can talk to you as an adult, without yelling.
You seem a pretty mature guy. I encourage you to do it.

Then, as you age...maybe you have not so much capacity of empathy as others ( I’m only guessing. Noone knows), it makes you a little different but it doesn’t have to be for bad. You can also take advantages of that. You are gonna avoid a big part of suffering empaths normally have to face, ( not mention about sensitive as hell people, like myself). This is gonna made of you a stronger person and a person capable of many things.

Do you have the opportunity to talk with a school counselor?