Nipple possibly prego?

Holly • Hi! I`m 21 years young! School full time, while I work part time. I have the most amazing boyfriend in the world, we are like each others best friends and couldn`t be any more happier! ♡
Hello, for the past 3 nights/days my nipple have been very very sore, and I recently just took a look at my nipple and there is bumps around my nipples. They're fairly large. Any advice?