My Gracie just had her puppies this past Friday. I did the temp thing with her too. I bet her little hiney bo was SO sore. Thursday afternoon, her temp dropped in the 98 degree range. She refused to eat all day--even with can puppy food which is very unusual for her.
She started having contractions around midnight. Temp had dropped to 98.3. She started her nesting (scratching) while a puppy was in the birth canal and then she was nesting like a wild woman. Throwing towels about and scratching/tearing newspaper. I was like, HELLLLOOOO!!!! You've had 63 days to do this!!!!! The first puppy was born right after 4 a.m.
Gracie carried for 64 days since first tie.
Good luck! Just let nature take it's course and quit worrying so much! I know...easier said than done!