First, let me say I love your style. I love a gal who turns on the music and has a good dance off all alone in her fuzzy socks!! Wish I could have joined you!! I fell when I was 17 weeks pregnant. What happened to me was that about 5 hours after I fell, I started spotting bright red blood. Scared he heck out of me. I was out of town on a trip with my entire massive in law family (which is hard enough in itself, ha ha) and had no idea where a hospital was. We were in the mountains. I called my doctor who put me on immediate bed rest for the remainder of the week. I spent the next several days in bed while on vacation. Now, this actually worked out well because I didn't have to participate in the family talent show (um hm, I'll say no more about my in laws) but it was scary. I rode home in the back seat of our car like an invalid and had a couple more days of bed rest but was fine after that. I was told if I started to bleed more than the bright red spotting that I needed to go to the emergency room wherever I could find one.
I'd say you took a hard fall but most likely everything is fine. If you start bleeding, Then it is time to call your doctor. Baby is well insulated in there. Our bodies take a beating during pregnancy. I'm sorry you fell!
But I like that you dance. :>)