Sleeping all day — is it normal?

Hi mommies! FTM here and currently 12 weeks pregnant. I’ve been sleeping a lot lately esp during the day. Sometimes literal kakain then tulog na after. It’s kind of disturbing like sometimes ask myself if am I allowed to sleep this much? But at the same time I feel so tired and just ending up sleeping. Normal po ba to? What do you do about it? #firsttimemom #pregnant