Contact lens: are my eyes too small or do I have to get used to not blinking when I put them on? Something's not working.

Maybe not used to it. If you are not used to contact lenses it might be hard to wear them at first, but it should get easier with time. Glasses are also good, but they can also take time to get used to. It is good to be able to use both. If the problems persist, see your eye doctor.