A Concussion???

On Saturday, I was getting out of the shower and heard the phone ringing. I wasn't "rushing", but thought I'd try to get it. (I was waiting for a call back from the kennel to get an estimate on boarding Brady and they are tough to get in touch with.) My first step was on the bath mat. The second step on the linoleum. And, my foot went right out from under me. My head hit the wall really hard. I sat there for a few seconds taking stock of how I was and decided I'd be sore, but was otherwise okay. I had a bruise on my ankle and a knot, plus some swelling and a scrape on my arm. Today.....2 days later, I'm thinking I have a concussion. I keep having dizzy spells. I think I'll be calling the doctor tomorrow.