I am 17 years old and have recently been experiencing aches and discomfort in my chest and armpit however it is mostly on and off, and when I am on my period. I currently have no lumps in my breasts however have a few tiny(about 1mm) lumps in my armpits which are slightly painful and uncomfortable. I am however not concerned about the Lumps as I commonly get boils and cysts: what has worried me is the pain along with some puckering in my armpit when I lift my arm there is a somewhat indent( about 1cm long). I am extremely worried and have no idea why I would have this sort of puckering skin. I have felt and I cannot feel any lumps underneath. Has anyone experienced anything similar. I could really do with some help. Thank you ️