Yes, I, too, had a misdiagnosis. Two years before I was diagnosed with Stage 3 (tumor in right breast and lymph node involvement), I found three lumps in my right breast in 2017. I went for a mammogram and ultrasound. They said they don't appear to be cancer and to monitor with 6-month check-ups. I did 6 months later. Then I moved. A year later I was diagnosed with Stage 3. I didn't have a biopsy until 2019. Why? I'll never know. Now I'm Stage 4 with liver mets. Not a great prognosis. Just going down the chemo train until the last stop when they tell me it doesn't work anymore and my liver can't take any more drugs. Luckily, I have very little pain or discomfort yet. Reading a book called "Being Mortal." It puts things in perspective for my next stage of getting ready to enter the little last stage of life. So scary. But I will pray. And I will hold my loved ones close and dear. I wish you the best and hope you have a better outcome. Yes, one needs to ask for things/procedures/screenings/biopsies even when doctors don't. I have learned that the hard way. Insist! Its your life.