Should I Consider Lasik To Eliminate Nearsightedness?

I am 18 years old and I suffer from myopia (nearsightedness) -5.5 for the left eye, -6 for the right eye and I have astigmatism too. My eyesight has not worsen for 2 years and I have not changed the prescription of my glasses since then.
Is it OK to get LASIK? Should I delay? Cos I don’t want my eyesight to go back the way it was if I get LASIK.

What Are Some Things I Need To Consider Before Deciding To Wear Eye Contacts?

I already know I need to consider the financial aspects of it.
I been back to having glasses for a year. If I were to get contacts, my glasses would still be the main eyewear, but like to have contacts for when glasses are not practical and very special occasions.
In case anyone was wondering about my eyes, I have astigmatism and considered far-sighted, my right eye is slightly crossed, I managed to pass the driver vision test with no glasses. I don’t see bluriness most the time, and when I do, is very slight amount of blur.
I pretty much get along without glasses, but want to wear them while my eyesight is not too bad off so it doesn’t get worse.
Thanks for any input.