nipple pain?! nipple discharge!?

Adang

PLEASE NOTE THAT I DO NOT WANT TO GET PREGNANT. I have taken multiple tests and they came out negative. I had bleeding for about three days and the bleeding ended today. I assumed it was my period. I am on birth control. I am 16. Is it normal for my nipples to have a pinching pain? I also had cloudy white discharge. This all happened after the bleeding that I thought was my AF