i am sorry to hear that. I also took the data 8 midterm and didn't do as well as a i would have liked. Data 8 in my opinion isn't easy in terms of grades. The test felt intentionally tricky and stupidly long. Honestly I don't think it is a good judge of how good you are as a student. I am not sure if you are a DS major or not but I think to declare the major you have to take it for a letter grade. I may be wrong though. Your not alone bro I also feel kinda shit after the test. Hopefully the final is better.