Hello ladies

I have a question regarding an upcoming ultrasound. I am having somr issues with my right breast. It is swollen and has a hardish lump in the upper outer corner. I have been fiddling with it for 2 weeks now. Not all day long but 1 or 2 times a day. I was wondering. My ultrasound is next week. Is it possible they can't check it properly due to aggravation or fluid from my prodding? Has anyone ever did this also and did the radiologist comment on it. Or did you postpone the exam due to some prodding? I am worried i messed up and they can't tell...

Thank you so much!