I just noticed when I checked to see if anyone has responded and by "breasts" I only mean my left breast. Sorry for the confusion and please offer some advice if you have any!
i am sorry, but without testing, there is no positive way to know what is going on. i know there are programs available for free mammograms, please try to find one.
i will say most ladies say they do not have pain with their cancer...but, will add, that I did experience pain.
best of luck to you.