So im currently 2 weeks  post partum, 26 yesrs old and noticed last week that my left nipple has started to retract slightly almost like cave in on itself on one side. I went to the drs on Wednesday and the dr could see also the problem so has referred me to the breast clinic. Dr could not find any lumps or anything else. I today received my appointment for 13th October so just under 2 weeks time. My question is, is this likely to be breast cancer? I'm a first time mum with a brand new little girl so as you can imagine I'm so so worried I just keep crying at the thought of what my new little family will have to go though if its something sinister. 

I'll add that my nipple doesn't stay retracted, its mainly after ive been wearing a bra! If I take my bra off or don't wear one it looks okay! It is flatter than my other nipple but not retracted all the time. I am also not breastfeeding so I know its nothing to do with that. I know no one can say for definite that it's nothing to worry about but has anyone had any similar experiences? 

Thank you xx