Macbook Pro crashing after updating to High Sierra

I have a MacBook Pro (Retina, 13-inch, Late 2013), 2,6 GHz Intel Core i5, 8 GB 1600 MHz DDR3 and since updating to the latest version of MacOS High Sierra (I was running the Latest Sierra version previous to this) yesterday, my Macbook crashed 3 times (causing the system to reboot), which is very unusual.

I'm a heavy user and I do have many open tabs o Firefox, pages and PDF Reader (not much more than this... Not quite so heavy), but my habits haven't change since updating my MacOS, then there's no reason for these continuous crashes.

Is there a solution for this? Is anyone else suffering from the same problems?