Just diagnosed with stage 3 brain tumour at 34

I had a seizure over a month ago and decided to go to A&E. I had a few scans they found a tumour and then had a have a craniotomy surgery.

I was  just told by a nurse yesterday that it’s stage 3 cancer and will need radiotherapy and chemotherapy. I’m now waiting for the oncologist to contact me 

Im scared and I’m worried about my job as the treatment will be around 10 months. I’m also single and want to have kids one day and I’m worried that may not happen for me now. 

Can anyone give me some advice to cope with this? 

Thank you