Cynthia, it might shock you to know that the grade is not the most important thing in this course. The important thing is if you learned the concepts that were being taught, even the ones you missed. If you just glanced at your errors and went on, that would be terrible! The system is set up so you can't do that though.
By the way, if other students and graduates were talking to you, they would say that Modules I and II were hard! Almost everyone feels the same way you do.
You said you hit a brick wall in E/M? You know what? I think E/M should be outlawed. Okay, maybe not that extreme but it IS hard, maybe the hardest of all for me personally. I have to be able to relate to any topic I'm studying, and for some reason it was difficult for me to relate to E/M. I thought that whoever invented it must have been on hallucinatory drugs. However, there is a time when one must come to the realization that it's there and we have to deal with it. So, we POWER THROUGH, as you are doing. You can do this!