Thanks for your query to us.
1. If it was really severe and you have persistent headache with tenderness, I would advise you to seek medical help
. Sometime this kind of trauma may result in hemorrhage between the skull bone and brain and can lead to problems later on.
2. A cough
is co-incidental but a running nose is important in this scenario and should be seen by a physician to rule out leakage of cerebrospinal fluid