Please please help me? Depression? Bipolar? Stress? What am I?

I think I'm bipolar. I've never felt like this before. My parents think im being apathetic and dont know whats wrong with me. Last year I felt super popular and this year I feel... Average. Maybe its my imagination idk. My parents are never proud of anything I do when I get a 3.8 GPA working my absolute hardest and try to impress them but they cant seem to understand. Theyre upse it wasnt a 4.0. I run, everytime i have a bad meet they scream at me. My mom calls me fat a lot and wants me to losr weight (135 lbs 5"6) And she keeps makinh me feel friendless because i dont invite frends over bc they stalk us when I do. Some days I want to just disappear, but other days I feel like im on the top of the world. I know this makes no sense but help