I know this may come at a surprise but yes I'm 27 and unable to pull my foreskin back at all. Ive never had an intercourse. Knowing these concerns , I've decided to take immediate action.
Also I've had these white spots under my fore skin for a while and I believe its because I cannot clean my penis.

Is it too late to try any stretching methods? I really don't want to get circumcised and go through that trauma and the discomfort after having the operation. Please advice

I think circumcision sounds like the only answer. Wait and see... I've never personally dealt with someone with a condition like yours at your age...

I had this problem when I was a young lad about 5 and I needed to be circumcised

It's never to late to do some stretching. Many circumcised men are restoring their foreskin by stretching what skin they do have left in order to grow more skin cells.
NORM - The National Organization of Restoring Men

You too could do the same thing but just to make the opening wider.
Many doctors prescribe a steroid cream for this the you use in conjunction with stretching exercises. I personally would do everything I can from getting cut. Do some home work and search the internet.

Circumcision Information and Resource Pages
Do a search on this website for "tight foreskin" and you will get plenty of articles.

I have foreskin too and I don't want to go to circumising and all that stinging on my penis :( I don't like the sound of "circumising" and if I don't remove foreskin I won't have any children isn't that right?