Lung cancer?

Hi I'm new here and just woundered if anyone had any advice for me..I'm 47 y/o f..

I'm worried I have lung cancer..

This last 8 months of been losing weight without dieting.. 20 pounds up to now and I really struggle to lose weight this has never happened be four.. Also iv got this pain in my chest when I take deepbreaths in..I dont have any cough infact my chest feels clear..but it does feel tight sometimes if I breath in or lie on my right side. If i lie on my back or stomach it's fine..the pain in my chest isn't that painful and its not sharp its really hard to explain but I can deffinitly feel it.... I just had a full blood count and that was fine.. I havnt had an xray because I'm terrified of the results so I'm just googling my symptoms constantly and it keeps saying I have lung cancer.. Could anyone please be kind and tell me there symptoms or if this sounds like lung cancer..my mum just died of lung cancer 1 year ago it was awful..

Thank you in advance for any replies

Love and hugs x