Fatigue!

Stephanie
I'm hoping others can relate to this. I'm 6w1d and the fatigue I've been experiencing is kicking my butt! I think I slept 40 hours Memorial Day weekend, and I don't know how to shake it! I'm normally in the gym 5 days a week, and I can't muster up the energy to go lately, and as soon as the work day ends, it's like I can't keep my eyes open, sometimes I'm napping at lunch. I got a full 12 hours just last night. Has anyone else experienced this? How long does this last?