Do I have OCD? im just wondering because?

for the past 3 weeks i have been having difficulty trying to sleep because i keep worrying from the smallest to the largest of things such as whether the mark i saw was actually my mark, about others, to the point where i sleep at 1-2am in the morning. As well if i felt somethings missing i start pondering what it could be and this happened before when i have packed it up in my bag.