I fell down a flight of stairs in may, black & blue, head to toe, but felt ok. i hit back of head hard in a pool & have had nausea & headaches 3 days?

Fall: Sorry about your mishaps. I recommend getting checked by your pcp to make sure u are ok.

Go get checked...: The fall back in may may or may not have contributed to the current symptoms. However, if the more recent hit in the head in the pool 3 days ago continues causing nausea and headaches, you need to contact your primary care physician and/or go to urgent care/er to rule out an internal head injury.