Hi thanks for posting your query in Healtcare Magic
Your problem may or may not be related to mild head injury
you described in your question. One thing you forgot to tell us about your age, because even some trivial injury in old age may result in to blood collection in bain (subdural hematoma
)that may manifest after many days as neurological symptoms
Head injury can be rule out by doing CT scan
brain especially when someone has neurological symptoms after injury and not getting better or worsen over time.
can also cause this problem specially blood calcium level. This can be easly diagnosed by doing blood investigation to know serum calcium level
I advise you to visit doctor he/she will look for other manifestations of low calcium and also look for other neurological sign that may require bain imaging.
Hope this information may help you. Take Care