I'm absolutely consumed with worry that I have lung cancer

[Imafuckingselfishidiot]

I'm 36. Smoked for about 16 years. About 10 a day but more when going out etc.
I was diagnosed with costochondritis a couple of years ago which causes chest pain.
It's back this week but I've convinced myself there's something wrong with my lungs.
I had an MRI a month ago as I had an issue with a spinal disc. Would anything have been picked up on that?
My chest pain is worse when I move and breathe deeply.
I have a bit of a cough, left over from a nasty infection a while ago but I'm not coughing anything up.

Honestly I just hate myself right now. What an absolute selfish idiot smoking! I have a child! How could I be so stupid, putting my child at risk of losing a parent.

I can't think of anything else right now. I feel like I'm losing the plot a bit. I have been to the GP so many times lately with other unconnected issues that Im worried they'll just fob me off for bring a hypochondriac.

What is the likelihood of lung cancer at 36?
I would be so grateful if some advice, but please don't chastise me for smoking I already know what an absolutely stupid and selfish idiot I am.

Glad you've been diagnosed properly and are on your way to feeling better soon OP.

RE your lung cancer question, every year you smoke you heighten the risk of getting lung cancer.

The reality is if you smoke you will have a 10-15 year reduced life expectancy. That is dying at 65 not 80 ouch. Or younger.

BUT the positive is this below.... (taken from cancer website)

'The study by Peto et al. also examined the effects of prolonged cigarette smoking and prolonged cessation on mortality from lung cancer.51 It found that when people who have been smoking for many years stop, even if they are well into middle age, they avoid most of their subsequent risk of lung cancer. Stopping smoking before middle age avoids more than 90% of the risk attributable to smoking. Two other major studies have shown similar results.'