Pregnancy fatigue or depression?

Just on 13 wks here and just starting to get out of my awful morning sickness. My morning sickness was so bad I’d literally stay in bed all day because of nausea. Moving around too much would cause me to puke, just walking in to the kitchen would make me puke. I would puke multiple times a day, and wouldn’t eat very much. I’m finally starting to slowly get over my morning sickness, but I’m definitely still fatigued. Like today I just spent the whole day sleeping.

I was telling my sister about me sleeping all day today and she said she’s worried I might be depressed. And now I’m wondering is it depression? Because I’m wondering if it’s also me not getting enough iron- prenatals don’t have iron in them and haven’t really been touching meat either mixed with just getting over my morning sickness.