Is it possible I have IBC at 19?

Hi everyone. I am 19 with a family history of breast cancer in which relatives and grandmother were diagnosed under 40 yrs old. The past two weeks my right breast has been progressively changing- fast. I did a self breast exam two weeks ago, noticed a firm hard mass on my right breast and noticed that it looked different from the left (it was lower than the other, indented on the side and getting bigger). Above the breast and the top of the breast there is swelling that extends to my armpit and neck. This is a week after my period. I went to my PCP, she did a breast exam and felt hard, firm masses in my right breast compared to the left and sent me for an ultrasound right away. the ultrasound came out clear - no lumps, but I have dense breasts. Within days the pain is getting worse, almost like a heavy shooting pain that going deep in the breast to my nipple, as well as in my armpit. There is a dull heavy ache constantly at the top of my right breast and in my right arm. The veins are EXTREMELY visible on that side now, I can see every single vein that extends from above my collarbone/shoulder to my nipple, whereas the left side the veins are barely visible. The discoloration is also getting worse, it looks like its bruising and darkening in the area from under my collarbone to the middle of my right breast. there is also a purple streak across the breast and today I've noticed its getting more red(red blotchiness across breast, with tiny little dimpling). The nipple also looks strange, its constantly swollen and flattening, as if its getting wider but flatter and puffy. I know 19 is a young age, but I have never experienced this before and the swelling, discoloration and pain is worsening by the day. even my jaw on the right side is swollen now. I see my PCP again on Tuesday and I hope she schedules an MRI, because I heard that ultrasounds do not always pick up everything. The doctors also ruled out infection, so my only thought right now is possible IBC.I know IBC causes itchiness, and I do remember itching my breast all the time a couple months back, but as of right now I just feel itchy all over my body. Meanwhile, the radiologist who did the ultrasound said nothing is wrong and that its probably just hormonal changes, but I know my body and this isnt right. Especially since it is worsening and is only on one side. ANY input is appreciated.