Breast & armpit lumps found by my GP. Been referred to the breast clinic and I can't stop thinking the worst. I'm only 29

Hi all

I have been having pain in my left breast on and off, that radiates under my armpit, today I seen my GP who could feel 2 small pea size lumps in my armpit and breast, she said it seems begin and she wouldnt reffer me if I didnt have a strong history of cancer in my family ( I believe she was saying that to boost my spirit up as I was teary ), I have also been having muscle and joint pain in my lower back that radiates to my upper back, armpits, chest etc, very unusual as I have always been fit, healthy, never had any medical issues as I am 29.

I have been referred to the breast clinic to have scans and possible biopsies, I cant stop thinking of the worst, has anyone had any similar experiences? I cant wrap my head around the muscle and joint pains around my body, my doctor said it could just be anxiety which is total rubbish, I dont suffer with anxiety however I am now. She couldn't really give me straight answers or help me to suggest why the muscle aches and breast lumps at the same time?

I have been put through as fast tracked and will have my appointment within 2 weeks.

Thanks..x