Keep pressing on....

I am fighting nearly every bone in my body to follow my career goal of becoming a Labor and Delivery nurse. I can *handle* the job, but the schooling is going to kill me, and I am just in the "gen eds" stage! Grr!
I am currently taking one class per semester. Clearly it's not the "fast route" to finish line, however, I have a husband on dialysis, that is on his machine 12+ hours a night, then he is at work at different hours of the day, leaving me home with two kids. My day is consumed with keeping the household running smoothly...anyway (Minor attempt to justify why I won't man up and "get it done") The class I am taking this semester is Psych 1100. Trying to make life easier on myself, I signed up for a telecourse. I guess I didn't have a clear idea of what a telecourse is. It's basically an independent study class, however, you have correspondance with your instructor if need be, and you go to the campus testing center for tests. Well...in a perfect world, this wouldn't sound so bad, but as I mentioned before, I work around my family's schedule and that does NOT work with the TESTING CENTER SCHEDULE. Grr again!
I have been attempting for more than 3 weeks, to get in touch with my instructor, she has literally gone MIA. My voicemails have gotten a bit snooty, which is not like me, but how hard is it to return a phone call? My studies have been put on hold, and I am on shakey mental ground, fighting a strong desire to withdrawl from the class. I will not quit! I will not quit!! Please dear God, give me the strength to stick it out, and possibly even Ace the class to maintain my 4.0 GPA. I will not quit. I will not quit. I have gotten the nudge it takes, (Mail today brought the summer classes catalog, I can't in clear conscious sign up for a new class, when I haven't finished the one I started!) Thank you Dear Lord. I am going to study my butt off and get in to that dang inconveniant totally freak me out testing center (Did I mention taking tests is a HUGE weakness of mine...I studied my butt off, and got in to the center a little over a month ago and took my first test, which I BOMBED! That was not good for the ego, considering I felt ready GRRRRRR) and take the dang test! Moving on!