Why am I always worrying?

It feels like i'm always worried about something. It doesn't prevent me from doing anything and I don't have compulsive behaviors. Like for a while i thought maybe I was gay and thats all I thought "maybe im gay, maybe im gay" decided no im not, now all i can think is "got to find a girlfriend got to find a girlfriend" last month I told my boss that I thought maybe she wanted an employee who could work more hours and for about 8 hours afterward all I thought was "how can i fix this how can i fix this". as I say it doesnt prevent me from doing anything but it eats up allot of my brain time and power that I could be using for other things. what does it mean?