Mind full of fluffy clouds - just found out I have lung cancer. I don't know what to think or do. Came as a complete shock

I have been told I have lung cancer , came as a complete shock .Haven’t been for scan yet but told that from my X-ray there is a piece measuring 2.2cm .I’m at a loss as what to think and what to do ,my family are saying wait till the results come through and don’t worry .Easier said than done  .Any advice please .