Newbie recently Diagnosed with Metastatic adenocarcinoma of the lung (spread to bones)

Hello everyone my name is Kerry, I hope you are all keeping as well as you can 

I don't know where to start really, I had that horrible flu bug over Christmas & NY that later developed into pneumonia.  After a course of antibiotics I started to feel better, but a couple of week's later I could barely breathe, I went back to my doctor who referred me for further X-Rays which showed my left lung was extremely cloudy is the word they used.  I was advised to attend A&E to avoid delay.

I was admitted to hospital as my left pleura was full of fluid, I had a chest drain fitted and over a 9 day stay in hospital just shy of 4 litres of fluid was removed.  My doctors said I was extremely unlucky and had a lung infection that would go away with a stronger 4 week course of antibiotics.

I was discharged from hospital on the 11th February feeling great and had a follow up appointment on the 14th February and am so glad my husband came with me as I was then told that I had Metastatic adenocarcinoma of the lung (spread to bones) Stage 4 lung cancer!!  I was in total shock as I had no symptoms at all and the doctors also said they were not expecting these results.  I lost my mum to Stage 4 lung cancer on her 60th birthday, I am 52 and they think it could be genetic which scares the hell out of me as I have 2 daughters.

I seen my oncologist 2 weeks later and started immunotherapy and chemotherapy exactly 3 weeks after diagnosis for which I am grateful that it happened so quickly as I know some people sadly wait a lot longer.  I do not have the gene mutation for frontline targeted therapy but have been advised it could be used as a second line of attack if you will.

My 2nd course of treatment is this Friday, I have it every 3 weeks for 4 cycles and I don't know if it's because I know its coming up again but all of a sudden over the last few days I feel so anxious and tearful. Up until now I have coped very well and tried to remain upbeat as I normally would (am not a glass half empty type of person) 

Has anyone else got the same as me that could give me a bit of hope for the future  love & healing wishes to all.