I seem to be a little obsessed with making sure doors are locked these days.. could this bean early sign of ocd?

Is it OCD?: It depends what you mean by "a little obsessed." it's not uncommon to check whether we locked a door or other things that we do frequently, without thinking. When we are feeling stressed this may get worse. Ocd is different, where ritual behaviors get compulsive, get out of control & take over our life. Often there is an awareness of it being out of proportion & out of control.