I took a hard fall two weeks ago, on my right side, my elbow dug into my side, which hurt, but it is much better- just a little sore. I took a lot of ibuprofen, so did not notice my back. Now, my back, just above my bra strap, under the shoulder blade hurts weirdly-sometimes when I twist, bend, lift, etc. When I sit, it is better, but it feels like a knife and it goes as fast as it comes. Do I need to go in to have it checked?