have you had bad past relationships? when i first got together with my bf, i was always worried wed break up...but by bf before him dumped me out of nowhere..so i was always worried, but weve been together long enough now thats its not a worry anymore :P i would just stay calm about it, im sure everything would work out in the end :) negative thinking never gets us anywhere :P
Life is risky, it's good to recognize that. And it's always good to have a Plan B in case Plan A doesn't work out.
Questioning things is an important part of life.