First off; relax.
I'd say its very unlikely-especially if your hand was dry-you probably got most on her clit anyway even if it wasn't. There are some things you can do to put your mind at ease like suggesting for this chick to get the morning after pill. Or buy a pregnancy test to make sure. I'd suggest you do these.
My better advice is to not do this again but don't forget about the blowjob in a hurry.
More comments, please.