I'm so sorry Jacks to hear of the loss of your husband, 42yrs together is a long time. It's very raw for you right now, but the pain you are feeling will become a little more bearable, but it takes time...a very long time. A big part of your life has gone, it's been 5mths for me since my wife passed away suddenly also from lung cancer in April, we were married for almost 49yrs.
I remember those first few weeks, they were unbearable, indeed it took me a little time for it to fully sink in. 5 months in, and the daily crying is occurring less often, I think the loneliness is probably the worst part, as I have few friends, my wife was my best friend, never needed anyone else, though I do have 2 or 3 who I speak to on the phone occasionally, as they live outside the UK, and my daughter who was very close to her Mum also phones most days.
You will find it difficult initially, and I wish I could say it gets better with time, time does help obviously, but I still get very upset when I start thinking about my dear wife....it does get less painful but it takes a long time. I can think of nothing worse than losing a beloved husband or wife, after so many years, they were our life, so how do we carry on afterwards, that's a question many ask, and I wish I knew the answer, because I'm struggling too, as many on here are, all we can do Jacks is to take it one day at a time.
Everyone here has gone through what you are feeling, sometimes talking about it does help.
We all need a hug sometimes so here's mine to you...
Best wishes.... Brian