When I got my depo shot my breasts seemed to have gotten sore right after n now I just noticed a painless lump on my areola?

If you noticed. a new breast lump, you should have it evaluated by your doc.
Breast lump. I would recommend you get examined .
Exam. The injection can cause some breast engorgement, which is usually temporary. Have any unexplained b breast lumps checked by your GYN.