Hi. both of my breast had a lump like marbles, and both painful. i'm feeling tired all the time. is it inflammatory breast cancer?

That is very hard to tell. Make an appointment with your doctor for evaluation, and have a mammogram study performed.

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. What you described suggests fibrocystic disease, a benign process. It would be prudent to see a doctor. Wish you good health!