hey OP, this must be very stressful.
i was referred on a 2-week wait about 6 years ago, for a lump i had been studiously ignoring.
i had mammograms, ultrasound and punch biopsies. none of these things were pleasant, but it wasn’t unbearably awful either. i ended up electing for surgery, even though the consultant was very, very sure it was a fibroid.
lumpectomy was fine. recovery wasn’t awful. the letter i then received explaining that the lump wasn’t what they thought, and histology showed it was a rare-ish thing called. Phyllodes Tumour. i then had further surgery to ensure it was all gone.
all of this, OP, whilst terrifying, was bearable as long as i talked to someone about it. you shouldn’t be carrying this burden of fear by yourself. talk to someone, please.
i have everything crossed for you. the NHS were amazing with me. they will be with you, too. trust the process, and once again, talk to someone.