Could this be depression?

My cousin thinks it is. BUt a couple months ago my mom left to Kuwait and when she gets home my parents are getting a divorce. And it upsets me alot to think about it so I try not to but I always end up thinking about it. But my health problems are me being usually sad and to myself, not wanting to eat, wanting to lay in bed all day, sleep all the time, getting dizzy like 3 times a day, and having like 3 really bad headaches everyday... Could this be depression?