Can I get a septum piercing after having Septoplasty a couple years ago?

Septoplasty alone is unlikely to remedy this situation. You definitely need to see a surgeon well-versed in rhinoplasty. Given your history of trauma and breathing issues, I suspect that you may have disrupted some of the cartilaginous attachments in your nose and may require more than just a...

You nose looks good but so Much depends on what was done during surgery. Specifically you should find out if a cartilage graft was used

Steroid injections to the nose are sometimes used for swelling/scar tissue during the early healing phase after nasal surgery. Seven years has passed and they wouldn't change your situation and doing so may risk permanent and unwanted changes to your nasal skin. You're better off consulting...