I was terrified to take any science courses. Being an English major with a perfect 4.0, the thought of a possible B made me tremble. Obviously, I switched to nursing. After the first week of A&P I, my first science course since 10th grade - a million years ago, I decided I would not be intimidated. First, I read the text book and reread things I did not understand, sentence by sentence if I had to, until it clicked. After the first test, I got together with another pre-nursing student and, basically, taught her the entire class! I now LOVE science and I am more excited about a semester than I have ever been. In the fall, I am taking A&P II, Chem, Pub. Speaking, and lifespan psych.
I think once you give it a chance and make the decision that you can do it, you will excel.
Also, I ended the semester with a 91.5% in A&P. At my school, a 91% in an A; so, I barely made it
Good luck to you!!