Should I receive the H1N1 vaccination?

My school is letting us get the H1N1 vaccination free of charge. We have until Wednesday to answer and fill out the consent form if we want to receive the vaccine. The problem is, I have read online and heard that the reason they were able to push out so many vaccines was because they used mercury as part of the vaccines. I have heard that mercury is bad for you and can cause autism. I don't want to receive the vaccine but my parents are not respecting my decision. I understand that they want to protect me and that's what they do but I have already asked them to understand why I am saying what I am saying. My dad is so ignorant and always disagrees with me. He keeps on saying that many people are dying and that the government won't administer the vaccine unless they thought it was safe. We had a rather loud argument about it and I am frustrated that for once he cannot just respect my decision. I want to know the risks at hand if I sign the consent form and receive the vaccine. I also want to know if the drug does contain mercury and/or other harmful substances that might reinforce my decision.