<s>[INST] hi i m 25 weight 47 height 5.2 , last month while playing a tenis ball hit me on my right breast and its become very painful and bloody maroonish ..i concern my dr. she give me antibiotics for 5 days but that cyst sort of thing is still there its paining as well ....kindly let me know wat is that and can it be a cancer sort of thing.... plz help me [/INST] Hi and welcome to HCM. Thanks for the query. cancer is not first thing to think of but it should be rule dout by ultrasound and mamography. Wish you good health. Regards </s>