Can anyone help describe what a fatty disposit in the breast feels like please ?

[Peanutbutterplease]

I have a pain under my arm it isn't there all the time . Slight tightness feeling across the chest (left side) I've experienced these pains before possibly 8yrs plus usually when due on or having my period then it goes . This time after my period it didn't go . But my period was completely different to how it has been for years. If I shave or use strong type spray deodrants I also get this "pain type feeling in my armpit .

I just Want some advice as in how a brrast feels I know this sounds silly as of course I've touched and examined my breast before but I've never been worried before and think possibly I am looking or feeling things that are normal and logically I know its normal but then you over think it all .

Ok I've lost a lot of weight naturally over the last 3 years my breasts before was large however now they are not so loose etc . So as I have felt my breasts I can feel almost like clusters of fatty lumps the same on the right but certain points hurt on my left . I don't have this pain continually and it does almost feel like I want to itch like after shaving possibly . Please someone a little advice noticed back pain on the left side too but I do ache and creek a lot more than when I was obese !, ironic !