hayhay92,
Unfortunately, without an examination, it is not possible to tell exactly what the lumps (masses) are.
A common cause of "bumps" on the anterior leg are herniations of muscle through the fascia. Lipomas are benign adipose tumors that are very common around the lower extremitites.
But, there are a whole host of other causes of lumps and bumps. Again, the only way to know for sure would be to have them looked at.
Good luck.