I fell down about 5 steps a few hrs ago on my tailbone .  I. Almost immediately had a headache begin in the lower back side of my head, near the base of the cranium.  I have now noticed nausea and still have a headache.  Is it possible the fall on my tailbone and the headache are related.  I fallen on my tailbone many times but never had a headache afterwards.
Hi, I had gone through your question and understand your concerns. Your headaches and nausea might be related to brain concussion from the fall. I recommend taking some rest and Paracetamol for your headaches. If the symptoms persist for the 5-6 hours, you need to see your local Doctor. Hope this answers your question. Wishing you good health.