Extreme fatigue ? 9 weeks pregnant

Anybody else have an increased amount of fatigue? Like I cant keep my eyes open through out the day. I sleep all night and then I wanna sleep all day to! I have a 3 year old and its just him and I for most of the day my hubby works 7am-8pm mon-friday and Im having trouble staying awake its scaring me because im accidentally falling asleep while watching my son. 😰