My right breast ALWAYS hurts

I gave birth to my first baby a year ago (Jan 8, 2018). During pregnancy both of my breasts were always tender. Then when she was born I tried breastfeeding her for about 3 weeks but had to stop because the breast pain was so bad. After I stopped breastfeeding the pain never really went away. Some days are better than others but my right breast is ALWAYS tender/sore. It doesn’t matter if I’m on my period or not. It is sore every single day. They get worse when I’m on my period. Sometimes my left breast will “act up” too, but it’s always my right breast.

Some days the pain is a 2 out of 10. Some days simply wearing a bra or shirt causes enough pain to bring me to tears.

I’m really paranoid about the big C, so I check myself about every two weeks for lumps/bumps or any changes & I haven’t noticed/found any.

Has anyone else experienced this?