Is my toe broken??????????

Well, I think I broke my big toe :(. I was running and I fell. My leg stiffened and my other leg scraped the payvement. I twisted and fell on my butt. I could amediatly feel my big toe swell up in my shoe. Now it's a couple days layer and it's HUGEELY fat and I'm a super skinny kid. 5'8 and 105 pounds. And I'm 13. The nail has black on it and my toe too. My toe is also very red and vey swollen. So swollen I can't bend it because it's too swollen and hurts lik a mf. I can't walk properly either as it is my main toe. What should I do? Should I see a doctor? This has also affected my whole foot. My foot is a llittle swollen and slightly discounted to a purple red color. Help!!!