My last pregnancy was 8 years ago and I felt exactly the same.
symptoms: extremely tired, no enthusiasm, everything makes me out of breath, walking around like taking my child to out for the day etc is so draining, just doing the hoovering makes me knackered, restless legs, can’t stand still without feeling like I’m going to explode (throbbing hands and feet and can almost hear heart thumping).
im getting sometimes 12 hours sleep and wake up exactly the same. My iron levels are normal. It’s so hard to describe but it’s just that I only feel content when I’m sitting down or in bed. Has anyone felt like this? I feel like this is what I should feel like at 40 weeks not 14 😥