Lump in right Breast

Today at my 8 week appointment my doctor gave me a full exam, including my first Breast exam... she felt a lump on my right breast that was significantly larger than the one in my left breast. And ordered an ultrasound on my breast, but I can’t get in for another week due to work... has anyone had any similar cases that turned out good? Like I side I am 8 weeks along and my breasts have definitely gotten much larger due to the pregnancy, I’m really hoping it’s just the growth not anything worse. Can anyone help me out?