Keep the appointment,  it's best to get it checked out.  I have a similar situation,  felt a thickening in my armpit towards the top of my breast. I mentioned it to the nurse when I had my mammogram and she said it all looked fine but to keep an eye on it. Fast Forward 10 months and I was getting undressed in front of the mirror which was unusual for me when I noticed a swelling to the to of my breast and a dimple.  It really made me panic especially as my partner had just been diagnosed with stage 4 prostate cancer.  I saw my gp who referred me to the breast clinic, the appointment was 2 weeks later. They did another mammogram and a scan and have said that it is nothing but have picked up some calcium in my breast which they are going to keep an eye on.

I hope all goeswell for your appointment and the outcome x

Keep the appointment,  it's best to get it checked out.  I have a similar situation,  felt a thickening in my armpit towards the top of my breast. I mentioned it to the nurse when I had my mammogram and she said it all looked fine but to keep an eye on it. Fast Forward 10 months and I was getting undressed in front of the mirror which was unusual for me when I noticed a swelling to the to of my breast and a dimple.  It really made me panic especially as my partner had just been diagnosed with stage 4 prostate cancer.  I saw my gp who referred me to the breast clinic, the appointment was 2 weeks later. They did another mammogram and a scan and have said that it is nothing but have picked up some calcium in my breast which they are going to keep an eye on.

I hope all goeswell for your appointment and the outcome x