Certainly felt like you describe for first pregnancy (plus SUCH
swollen feet and ankles and back pain), and felt similar for 2nd (without the cankles), but I'm surprisingly doing ok at the 36 week mark of this one! Was a little rough in 2nd trimester, highly fatigued, with SPD, but 3rd trimester has been very smooth for some reason! But I can still sympathise with you, my memories are clear enough!