I was also the same at your age ... I think most teens go through these emotional stages, it's most likely hormonal. My mom also used to nag me about alot of little things too, and it used to annoy me but now that I have a teenager, I see why she was like that and so will you, someday

I'm sure your dad is just worried about the fact that soon u will be an adult and living your own life. Try to stay positive (thats what I tell myself when times are hard) and focus on your goals for the future ... Dont let temporary problems or negative people get you down.