Huge Hard Lump Left Breast

Hi I'm 23 got my nipples pierced the week before last and then noticed a few days ago a huge lump just beneath my areola on my left breast. I hope it's nothing but the size of it is alarming I'd put it 8-10cm shaped like a sausage. When I first came across and squeezed there was a popping sensation almost. I've had benign tumours in the past at like 15 but I do find this lump worrisome.  I have a doctor's appointment but thanks to covid it's only via telephone but I really think an in person examination would be best. I would really like my examination expedited to an ultrasound and biopsy. My mum had cells discovered that were on their way to being cancerous so it's something that could be genetic. She doesn't believe in treatment though she just leads a healthy lifestyle. If it is cancer I know she wouldn't be keen on surgery or chemo