Nipple piercing rejection - Will it scar? Is surgery needed? (photos)

I've had my nipples piercing for over 5 years now and about a year ago i started noticing a hole in the middle of my nipple where you can see the barbell. Some sebaceous fluid kept coming out of it so i just thought it was normal and proceeded to clean if often. Yesterday i noticed how big it got and i read it means rejection. im worried it wont heal on its own. Sould i get recontructive surgery or is it totally not necesary? Im worried about breast feeding in the future.