Going out of my mind living in limbo (possible breast cancer

Hello everyone, new here 

I noticed an indentation on my breast a week ago , went to docs 

she said it was a large lump size of an egg and she was worried 

Sister had breast cancer a few years ago too I now have to wait 2 weeks for tests , can it be fast tracked as I'm going crazy just waiting about , I'd rather know 

surely a large tumour size of an egg is terminal ? 

Id really appreciate any support or advice