I'm 21 years old, and one of my nipples is inverted and other is very slightly pointed outwards. Is it a matter of concern?

Thank you for your
question. Pictures would be helpful.Having some degree of nipple asymmetry is normal.  Inverted nipples are common.Please keep in mind that getting this surgically corrected might interfere with future breastfeeding.

To be sure what might be right for you, see two or more experienced,
board-certified Plastic Surgeons for a complete evaluation to make sure you are
a good candidate and that it is safe for you to have surgery.

I hope this helps.

It sounds like you have nipple inversion on one side, which is a common problem and should not be any risk to your health.  It can usually be fixed easily with a minor procedure.

Typically the inverted nipple is due to tight ducts. If you are considering a pregnancy at some point and maybe breast feeding, I would wait. Till then you should do well.Stephen M.Davis, MD, FACSGreen Hills Plastic Surgery