Nipple pain

For the last year I have had consistent pain on my right nipple. Every time I press or run my finger over it there is pain. The pain only lasts just short of a second and then it's gone. But every time I touch it or my boyfriend tries to lick/ suck it it's sends me into agony. So we stopped. I used to get sensation in my nipple when my boyfriend would suck/ lick them, but now there's nothing but an uncomfortable feeling. My left nipple is fine. I have noticed that this past 8 months my nipple in the middle of it has started to go like the colour of my skin. I am quite fair, and not pink like my other nipple. Does this mean anything? As I said this is all the time so it's not due to my cycle. I am 20 years old and I have a history of breast cancer in my family. It's hard to tell if I have lumps because I get cysts in both of my boobs, because I once went to the doctor thinking I had been riddled in breast cancer, but she told me some girls get cysts in their boobs etc. I know what I am looking for, since I'm educated on it from my mother and Nanna who have both had great cancer. I just don't know what this is. Thanks in advance :)