EXHAUSTED

okay y'all, I need some help! I'm currently 36 weeks and 2 days, and ever since about 34 weeks I've been so exhausted! It's a struggle even getting out of bed every morning, I literally have to talk myself into getting up! I work 8 hours everyday so there's not really any time for naps, but is this normal or should I be concerned? I'm a FTM and I just want to make sure that this is a normal thing and there isn't anything wrong? Please give me some feedback! :)