Absolutely exhausted 😩

I am now 15+2 weeks and am still exhausted. I sleep about 8-8 1/2 hours every night, I wear a Fitbit that tracks my sleep. Everyday around 10 AM I feel absolutely exhausted. I can’t stop yawning and I really just want to go take a nap but I work so I can’t. I thought the fatigue was supposed to subside in the second trimester? So far I feel like I’m getting more and more tired. I do have weird pregnancy dreams so idk if that has something to do with it. Anyone else dealing with this and know how to wake up?

I do work at a computer all day but try to get up every now and then and sometimes I put my legs up a wall to circulate my blood but it’s not really helping.