Oversleeping?

I'm currently in TWW and have been sleeping a lot like 12-13 hours. Mood wise when wake I feel okay or happy so I don't think it is depression. Part of me wants to schedule an appointment to see if maybe something is wrong. Another part says give it a couple of days. Maybe AF will come and my energy levels will return. Or I could get a BFP and spend the first trimester sleeping. Lol thoughts? Advice?