MY GRADEZ!!!

Honestly, i'm really upset with myself. i work a lot, and try my hardest to do all my work and do it as best as i can. And then i saw my grades today, (this is the last day for teachers to put in grades before the progress report friday) and my grades are so bad. Idk what to do. i've talked to my teachers countless of times and I just don't know what to do anymore:(( i do so much, only for them to be bad?? then i look at what things are and arent graded, and the only things that aren't counted are my ACTUAL GOOD GRADES. like my math class, shes counting stuff from LAST QUARTER (there are 4 quarters in my school, 2 in each semester) and shes counting stuff from the beginning of the school year, and none of the work ive done recently. So i have a F, finally when i actually understand things. :(( i feel like a failure, i have like 3 Fs, and idk what to do.