Small, sore lump in between my ribs directly below my bra . what could it be? it allso hurts across that area with pain that spreads when i laugh.

Hard to say: If you have a soft tissue lesion anywhere that you have noticed, it bears observation. Lesions that are increasing in size, especially rapidly, or those associated with increasing pain, are concerns for malignancy. A painless mass which is constant in size, unchanging in appearance, and unchanged over time is likely benign. Lipomas are the most common soft tissue benign lesions; common and benign.