I stubbed my toe next to my little one last night, have noticed bruising and a little lump today and its slightly painful to walk on, could it broken?

It could!: The nice thing about little toes is that they tend to heal without a lot of fuss. You can gently tape it to the one next to it (tape third toe to fourth, rather than fourth toe to fifth). Wear a stiff-soled shoe and don't go barefoot while you're healing. See your doctor if it doesn't start feeling better in a few weeks!

Get an X-ray: Without an xray and proper evaluation by the doctor, you won't really know...Get it checked!