I fell very hard on my resurfaced BHR hip by De Smet 2 years ago. Once off my bike when it got stuck between the grass and bricks. OUCH I fell right on the hip. It was sore and I was really worried, but ended up OK. Then later in the year, I missed a little 2 inch step in an old house and fell right on it again. Somehow - it held up both times. You immediately get that vision of what a revision would be like. Fortunately, for me and hopefully you, it was not required.
I would guess, not being a doctor though, that you have really bruised yourself. If you actually broke something or fractured anything - it would hurt hurt hurt like you know what. I would give it a couple days more and see how things work out. I fell on my knee last year really hard and it took forever for it to heal and not be sore.
If you are worried, you can always get an x-ray. Many of us have found the BHR is much stronger than our bones, muscles and ligaments.
Good Luck.
Pat