college problems

I have been having a lot of trouble with this teacher on my online school for a while now. This is the third time that I have had to retake this class because I don't understand one of the programs that I have to use for my work. I checked my grades last night and she took points off for what she said was grammar errors and I read my work to my mom and she said that there was no grammar errors on my end. She also said that she wants me to get more in detail with my answers but there is only so much you can say in a response to someone else's work when that person puts a lot of information into their work and it covers all the information. I mean I can only say so much without having to say the same thing over and over all the time. I am going to email my lead and let him know about this problem that I am having. I really want to pass this class so that I can move on and finish my school and be done, only have 4 more classes to do after this class is over with. I have been thinking about taking a little time off after I have do this class so that I can take a little time to rest after I have my baby and I will be having surgery soon after I have my baby to get my tubes tied and I know that I will be busy. I have a lot of things coming up in the next 3 months, baby due, doctor appts for my boys and my self, getting my oldest son ready for his 6 weeks with my dad this summer. I have a lot of things going on and I have been thinking about taking a leave for a few weeks to get some rest and just play mommy for a few weeks and not mommy and student at the same time for a few weeks. I am going to talk to my school and see what I can do. Plus after having this teacher again right now will be putting a lot of stress on me that I don't really need right now.