New to the board - Hello

For the last few days (And currently) I have been getting a pins and needles and mostly a pain on the left side of my chest and armpit. I have also been getting this feeling of a fluttering in my chest like my heart is a hummingbird.
I'm 35, smoke, under a good amount of stress and could stand to lose 20-30lbs.

I know the obvious answer - lose weight, stop smoking and exercise - but do you think I am in any immediate danger or are these just good warning signs that I should take seriously?

go see a doctor. might be nothing more then stomach pain(acid reflux and gerd), or it may be something serious. do not wait!