Ultrasound tomorrow ( sorry for spelling im dyslexic )

so after trying to get in with my GP for the last week to no avail I finally decided just to go to a walk-in clinic about the breast lump because in the last week it one half of my breast has gotten all swollen and red and very hot to the touch and the lump has not gone away The clinic doctor examined me and felt I for sure need an Ultrasound as soon as possible so he called over to an ultrasound place and they got me in for tomorrow at 3:10 I'm so nervous I feel like it's likely not cancer because I'm only 28 But I have also gotten other rare things in my life My family's joke is that if it's a rare it's more likely i have it then it is if it's common, I'm trying not to stress and just take it day by day I guess tomorrow iwill at least be on the road answer The doctor also put me on an anabiotic said with this type of inflammation and redness it may be infection