I Was Working Out Earlier Today. I Went Take Shower

I was working out earlier today. I went take shower and I fell and hit the back of my head getting out of the shower. I had a bump on my head but I applied an ice pack on the back of my head as I drove home for approximately 1 1/2 hours and the swelling has gone down some. I'm not experiencing any other symptoms. Should I be concerned? My head is not hurting right now