Head did hurt after sledding last night?

I went sledding last night and one of the times I hit a dip in the hill and tried to stop myself, which was dumb b/c the hill was really slick and steep, but anyway i ended up falling off my sled and rolling the rest of the way down the hill, my head started to hurt on the right side afterwards and it continued to be a dull pain for the rest of the night, but i don't think i hit my head on the ground or anything and then when i woke up this morning, i head a headache, but it went away within an hour of waking up.