I have hard lumps behind my nipple from squeezing them , and rubbing them because i had inverted nipples? what can i do to get rid of it? 14 male

Need medical check: The chances are the hard lump behind the nipple(s) in a 14 years old male is secondary to puberty. This usually will subside in 1-3 years. However having inverted nipple causes more concern. It would be best to have your parents take you to your pediatrician to be checked. If needed he or she may make a referral to a breast specialist.

Stop squeezing!: It sounds as if you have pubertal gynecomastia, and the lumps are not from squeezing, they are the actual glandular (fibrous) tissue that accompany puberty hormone surges. The good news is that usually this resolves without treatment or surgery, but if the breast growth persists or worsens, plastic surgeons fix this all the time with a simple safe operation. Pot use make gyno worse, btw.