Big Swollen Breasts Does Lap Swimming Cause Swollen Breasts?

Does Lap Swimming cause swollen breasts? - big swollen breasts

I started swimming during training last week and I noted recently, my breasts have become bigger or swollen and very painful, and my shoulders were big, Im not sure if swimming or something else. I had my period on 23 June, so I do not think instant messaging is not pregnant, but this could hurt the Prime pretty bad?