@manda1 It sounds like you’re going through a tough time. Your experience has potential similarities with symptoms of ADHD and possibly depression, but it’s important to remember that only a professional can diagnose these conditions. There’s another thread: Do I have ADHD ? where a professional has replied, and it seems like you’ve read it before.
If you feel comfortable, reaching out to a professional could be helpful. If not, try to focus on your exams and take things one step at a time. Your well-being is important, and taking small steps can make a big difference.