Dear Suefitz20, hello.
The structure of the skin in the scalp
area is such that it easily gets swelled up whenever any hard object hits it. Similar is the reason for the black eye. The swelling resolves by itself in few days to weeks. Headache will also subside in few days. If the headache persists or if any symptom like confusion, memory loss
, giddinees, irritability, walking problem ,etc occur, then you should consult a Neurophysician for further examination.