I'm really struggling... worried about mum's lung nodule

It’s been such an anxious journey, the lung nodule turned out to be nothing, it remained stable, I believe the words her oncologist used was ‘nothing to do with the cancer’, it will be checked again in 6 months so I guess it’s following the normal nhs schedule. Mum has just had her lumpectomy a couple days ago. I was an anxious person before her diagnosis but it really has changed me :confused: