If it hurts real bad then you need to see a doctor! Let me tell you from my own experience that backs are nothing to play around with! When I was in high school I was dropped while tumbling. It was when I was first doing doubles and even though I was on a spring floor, the spotter dropped me, I rolled off the floor onto the concrete and then he fell on top of me. After that I started having pain in my back and down my leg. I went to the chiropractor and he told me that I just had sciatica from the accident and that I could still cheer. So I kept going and pushing, and it got to the point where I had to take like 6 aspirin just to get through practice. And that just made the pain bearable. Then one night when I was in college my coach made us do standing tumbling over and over again and later that night I couldn't even stand up. Scariest thing ever! I had to go have an MRI and they found that I had 2 ruptured discs in my back and they were pressing against my sciatic nerve and the fluid (that keeps your discs from compressing together) had seeped out. So basically my discs were pressing against each other. He said that I needed to have surgery and wasn't able to cheer anymore. Needless to say I argued and told him that I was going to keep cheering either way. After a fierce battle, he said that all he could do was give me epidurals (they give them to women in labor and old people) to help with the pain. I had 3 epidurals and let me tell you, it was NOT fun having them poke a GIANT needle into my spine until they could find the spot! And the medicine that they injected burned! Each time I would go for my epidurals I would be with 70-80 year old people. Talk about feeling out of place! The nurses told me I was one of the youngest people that they had seen having to get them. The injections helped a lot for the time being, but now, several years later I'm right back where I started. I can't do anything physical without extreme pain. I can't even stand for periods of time without bad pain in my back, and my legs and feet going numb. I still have to get surgery, but I'm trying to put it off for as long as I can. All because I didn't go to the doctor when it first happened.
So, long story short, GET IT CHECKED OUT!!! And get a second opinion too! :)