Help!!! Always sleepy!

Hi mamas,

I'm 20weeks and 5 days now and for the past week I've been feeling incredibly sleepy after breakfast despite the fact that I get at least 8hrs of sleep every night. When I can't resist any longer and take a nap, the sleep is really deep (I'm usually a light sleeper, especially when napping). I was always sleepy and fatigued during my first trimester but that feeling left and has only just returned. Is anyone else experiencing this? How did/do you deal with it?