Aw above, I'd get to your doctor. Chances are it is just a pregnancy thing but there is always a chance it isn't. You should still remain vigilant for breast changes in pregnancy. I'm currently keeping a close eye on a couple of moles that have changed a bit over pregnancy. Ones gone a funny colour and ones grown in size. Doc thinks they are probably ok and it's hormones but I'm taking regular pictures to track any changes!
Hopefully they'll take it more seriously when they see it in person. I assume he's expecting I'm making it sound worse than it is to be seen. As soon as I can on Wednesday I'll update the thread. X