Too Firm?

So the problem with my old mattress is that it was way too soft. It ended up hurting my back really bad to sleep on it. It was super comfortable to lounge on and nap on, but actual sleeping wasnt so great.

So when I bought my new mattress I bought a firm mattress. I have been lying on it now for about an hour...and I'm starting to worry that it might be too firm. It is almost bouncy...

I'm sure that it will break in pretty quickly, but I'm worried that I may just roll off of it in the middle of the night! LOL. I'm also worried that even though the firmness might be really good for my back and it will probably help me staty asleep all night, the firmness might prevent me from falling asleep. It isn't exactly the most "cozy" of mattresses.

Man, this is why I hate buying things like mattresses. They are just sooo risky to buy because you have NO idea if it is going to work for you.

Well, the one really nice thing is that it will be a nice bed for doing homework on. I can move around on the bed and it wont make all my papers jostel around lol.

Wish me luck having a good night's sleep on this mattress tonight :-/