OCD? Probably not. OCD is a lot more global than that--you would be having a long-term preoccupation that you couldn't get your mind off, probably have developed rituals to try to stop thinking of it or make yourself less anxious. But remember that OCD, like all mental illnesses, is the extreme expression of a typical trait; so what you are dealing with could be the typical, non-pathological version that would in its extreme form be OCD. You worry your laptop will get destroyed and you keep checking to make sure it isn't; you worry you'll get ants so you clean your floor repeatedly. Maybe some of the same stuff that works for folks with OCD will work for you--mainly, deliberately preventing yourself from doing the repetitive stuff that your anxiety is trying to get you to do; for example, deliberately leaving a crumb on your floor, or deliberately not checking your laptop next time you worry you might have damaged it. The more you prevent that kind of thing, the less you get locked into the cycle, the less time you waste checking and cleaning.