Feeling depressed 😥

Lisa
I'm 6 weeks and 1 day today! We found out three weeks ago!
Should be the happiest time of my life I know but I just feel really down and depressed 🙁. I have no energy to do anything outside of work so when I get home I am literally just sitting or sleeping, I'm feeling constantly lethargic. Just not myself!
Anyone else?
Is this normal?