3rd trimester exhaustion...

This is my 3rd and I don’t ever remember having this level of exhaustion by 34 weeks... I slept almost 10 hrs last night, took a 2 hr nap today when my girls did and it’s barely 6:30 and I feel like I’m going to fall asleep standing up... last night I was having some contractions but not many and they died off quickly... anyone else experience this or currently experiencing this?? And I just don’t feel good. Usually that only happens if I wait to long to eat. I didn’t experience this either with either of my other pregnancies. If I ask family they tell me it’s all in my head and I just want baby to come early... but it’s still a tad too early so no I don’t really.