It would be worth your time to go to your family doctor and talk to them about what has happened and see if pain meds and pt will help. An x-ray or even better and mri will be very useful in diagnosing of you hurt your lower back with the fall on the hard pavement. Don't wait to see if the pain goes away, it will probably only get worse and then it may be too late for conservitive treatments to help. Just my opinion of course.

I agree, and xray would be a good idea, but considering there's a chance that I could be pregnant, I don't think that's a very good idea unfortunately. My back feels better today though. So maybe it was just from the way I was sleeping...

I would seriously recommend going to the doctor as soon as you can.. I feel on ice, and felt fine for a year afterward. And then just felt ridiculous pain, and had to go to the er. Turned out I fractured my l5 and now have disc degeneration at 26. So even though you may feel fine, you may have some damage. Just some advice from someone who's been there..

Thanks i'm planning on going to see my doctor as soon as I get home next week.