Nipple trouble

I have been BFing for the last 16 months and only one feed a day for the last few months. In the last month or so I've noticed that my nipples look "squashed." I don't know if my nipples have been stretched and then they get squashed into my breasts when I wear bras/shirts or if it's something else. Either way, it wasn't like this before when I fed my daughter. In addition, I always did lots of expressing and never had this issue and that really stretched my nipples. There's an actual line on both nipples where the nipple folds into the breast. I hope this makes sense. I guess I just wanted to see if this was normal or if I should get it checked out.

starangelk, I've only been feeding for 4 months, but my right nipple does the same thing - it must always sit squashed to the same side in my bra, cos it's always creased on the right side and squished sideways. It straightens out after a feed or is my nipple gets erect, though. I haven't been worried about it, but having said that, I do remember a doctor demonstrating how to do a breast self examination, many years ago, and there's something in that about checking nipple symmetry.

I wonder what others have to say...

does it hurt, or any other sign of issues?
Mine do that, too. It just seems to be the way they fold over in the bra :dunno:

It doesn't hurt - no other signs of trouble. It's just never happened before so I wondered whether it was an issue. Seems like it's not really. Thanks guys :)