Breast lump under nipple in 14 yr old male, could i have breast cancer?

Unlikely: ..But not impossible. Furthermore, it could be something else of importance so i suggest it gets checked. Best to y'all.

Doubt it: Pubertal gynecomastia can effect the majority of males as the begin their pubertal transition. A lump on one or both sides & some pain with touch is common. Most are minimal and last 6m to a year, but occasional longer episodes do occur (1-3yr) spongy glandular tissue directly under the nipple defines the process. You can have your doc confirm the issue.