21 weeks & so tired - anyone else?

I’m 21 w 3 d and I’m so tired. Did anyone else get tired around this point? I notice I’m more restless at night not getting the best sleep and I’ve gained 4 pounds in the last week (7 in whole pregnancy so far).

Do you think the extra weight so fast could cause me to be tired. Not sure if I’m normal pregnancy tired or if it could be something else.

Would love to hear your input and experiences too! ❤️