Tired, thirsty and feeling big!

I'm almost 35 weeks pregnant and I'm almost miserable.  I'm constantly tired, always overly thirsty and in general, just feeling large, blobish and I waddle everywhere.  I must have blocked this portion of my first pregnancy out of my mind, because I honestly don't remember being this tired when I was pregnant with my son.  I remember not being able to sleep actually, but with this pregnancy I sleep at night but I am tired all day!  Probably has something to do with trying to keep up with my almost 2 and 1/2 year old son, but man, I'm spent by 7pm.  And the endless thirst?!?!  What the heck?!?!  I can't get enough to drink!  I drink so much water daily now that I feel as if I'm going to float away...but I'm still thirsty.  And right now, I'm going to have to drink some water before heading to bed, which is not a good idea, I know, seeing as it means I will be up all night peeing, but I can't handle how parched I am!  I definitely don't think this happened to me during my first pregnancy!  I'm less bloated this time as I just had to take off my wedding rings this week whereas with my son I think I was still in my second trimester when I took them off!

Okay, I have vented enough...have another OB/GYN appointment tomorrow and hubby is going so we can talk more with my doctor about the ultrasound results from last week.  Hopefully, everything goes well!  I'm off to bed...well, right after I drink some more water and waddle up the stairs!  :)