You can, it is never "too early" to have your own domain because with your own domain you have ownership and you will be much more brandable. The key is choosing the right domain for your niche.

I have recently created a discussion on this that will definitely help you out here Michelle:

How Do I Choose a Good Domain Name?

Thanks for replying. I am happy with my niche, just not the content and look of it. I think I just need to add some images and maybe change the theme? Maybe it will help if go through the process of getting my own domain and then it will give me the push that I need.

I personally would advise you to purchase your own domain name if you are serious about your business! :)

recommend you buy your own domain as soon as you can. siterubix belongs to WA and you really need to your own domain.

Domain names are cheap but if you are not sure of your niche it could be a waste of money. I won't tell you not to buy one but by waiting could cost you a chance of getting the name you want. Best of luck in deciding but that's a choice you must make.