Constantly sleeping and tired

I’m 32 weeks and find that I’m sleeping a lot more than I should be. I can sleep for around 10-12 hours a night but then wake up and still be tired then take a nap at like 4pm for an hour or two. I just feel constantly tired no matter how little or how long I sleep for. I’m so unmotivated to do housework too or go out because I’m just exhausted. The back pains and headaches dont help. Does anyone else feel like this? I feel like it’s just the past 1-2 weeks I’ve felt this way. No my mood isn’t low and I’m definitely not depressed I’m just so tired.