If you're getting headaches, you may need a lower estrogen birth control. I got headaches from Ortho and was switched to Aleese. I haven't tried the patch, but plan to once I've finished the next two months supply.
Just thinking about sticking a needle in someone makes me feel dizzy and sick. I don't mind having a needle put into me, but I can't imagine sticking someone else! Just watching the needle go inside the skin grosses me out! Congrats on your accomplishment!
I'm on a small campus also and my teachers are so nice and respectful. In my Med Term class there are a few girls that ask questions undoubtedly all night long and our teacher takes the time to answer their questions w/o a snotty attitude attached. I don't think I would of said anything to the instructor though. You can always just take it with a grain of salt and realize that you are gaining more experience and knowledge by doing tasks that others are not. I would take advantage of your situation.
If you had said "you know, it was a nurse that caught that" and they went to the Dr. and repeated what you said to them, could the Dr. do anything besides give you an attitude?