Oh my god. PLEASE help. Fleas or bedbugs?!?

I've got this little red bites all over. They're very itchy. I've done some research to try to figure out if they are from fleas, or bedbugs or something else all together. I put a picture of some of the bites up, the quality isn't good but its the best I can do. I do NOT have carpet in my room and my mattress is brand new. We just got it a few months ago. And we have no pets and don't live close to anyone that does so I have no idea what these bugs are or where they came from. Anyway, I was leaning towards fleas, because I have seen some of these bugs crawling around on my floor. I have seen them jump, which makes me think they're fleas. They're small and black or brown. They aren't hard to squish though? I've killed probably six of them with a book in the past hour. Also, I saw that fleas mostly bite your lower legs and I only have on bite on my ankle and several on my thighs, behind my knee, my upper arm, and a few on my stomach. Also, I read bed bugs hide in clothes and my room was VERY messy with tons of clothes everywhere. I just cleaned it yesterday, which is when I started seeing the bugs. I've only seen them on the floor. I just really need to know what these are so I can know how to go about getting rid of them. This is a nightmare, please help. https://mail.google.com/mail/?ui=2&ik=48b7073087&view=att&th=130d53abcd034cb3&attid=0.1&disp=thd&realattid=1372845462473670656-1&zw