C.J.
My son's fingers got smashed (as in flat!!) in the door when his older brother slammed it.
I was so freaked out, I made my husband take him to the pediatric urgent care - nothing. Tissue damage, no bone breakage (thank God!).
However, it swelled, he had limited movement for about two weeks and it turned purple. We kept ice on it and gave him advil if he really got to where he said it hurt.
the thing I realized and conveyed to my son is the swelling is there to keep they joint from moving while you heal. I think it is fine not to go for x-ray and just keep eye on it - I bet in a few days swelling will go down and the finger will straighten right out:)