39 weeks pregnant and I can't imagine feeling any more tired!?

I think I have lost it...like many of you I can't sleep more than 2-3 hours at a time during the night....my stomache is carrying a bit more fluid than it should so Ilike huge...everyone asks "are you havine twins"...I get frustrated at my husband because I feel as though he doesn't take enough time for me...and really I can't do a damn thing anyway...we are suppose to go to the movies and honestly I can't go, because I can't even sit that long...but tell me...I won't be this tired after birth, right? I feel as though I am so out of shape I don't understand why my feet feel like cement, I lean backwards when walk and my legs get tired too easily! This is normal right guys! I already lost my mucus plug last week, my contractions are coming in more often and I have a lot of cramping, but nothing materializes...I need some comfort and a short prayer from everyone....Please say " God if the baby is ready, please allow Lisa to give birth"...thank you!