I do think you need some adult you can trust, and who could speak to your parents, with all you do, and how hard you try, it greatly concerns me that they are not Concerned for You as person. It sounds as though you are overwhelmed, obviously you can, and have, done the work to obtain high grades; something is happening that is getting in the way. Is it the Expectations? Has something else changed in your life? ....hang in there, if you can talk with your guidance counselor...and of course to your t. ....