I have been sent for a 2ww referral after finding that my left nipple has become inverted. I noticed it over the last few months but because it sometimes came out I just though it was a bit strange. I am still waiting for my appointment and I am getting a bit worried. I have read lots of people's posts and i realise everyone is different. I do not have any lumps or swellings, just my nipple that lies flat.has anyone else experienced this? I really don't know what I'm asking as I think it's a bit of panic if I'm honest.love to hear from anyone out there who has felt the same.x