Well, you need to stress to them how you feel , tell them you're sad, anxious, tired if they won't listen than talk to school counsellor about it .
My parents don't take me seriously when I talk about mental disorders I think I have, how can I earn respect/see a doctor?
Go to them and this time with a very very very serious expression speaking about your problem, and say the speech with an awesome expression and don't let their attention be lost....their eyes should be on only you and I hope they will get it at last!
Ya'know bringing an elder to satisfaction is harder than teaching a child!
It is a common problem for every child. Don't take too much stress. You should press pause and press rewind... You should follow your parents when you are near them.. You are captain of your life....