I've been doing weird things in the middle of the night.

Every weekend for the last few months, I've felt a compulsion to just go out and do something extremely random. Around 11:30 last night, I drove over an hour to my state's capital, then turned around and came back. I didn't play music, and nothing was going through my head. Before that, I walked 20 miles to the pool in the city near me and just turned around again (about 10:30). I've also done a lot of sitting around. I laid in my driveway for six hours (2 am - 8 am) and my back porch for 4 (2 am - 6 am) without thinking anything. Just lying still. I don't plan to do these things, I just feel a compulsion when the urge hits. I don't know if I should be concerned