Hello
Sorry you're stressed.
Although I'm an old Mummy now, I do remember what hard work Uni. was. I don't know about the American education system, or what problems you're having with your course. However, I'd say:
* speak to your tutor about the difficulties you're having. They should be able to give you extra help or suggest some more effective study techniques. It's their job to help you.
* be very goal orientated. Take modules that you know you're good at to maximize your chance of success (even if they are not the most interesting)
* make effective use of the available resources, such as the library & internet. It's unlikely that the work set is completely new/original - someone, somewhere will have done something like it before
Good luck.