temp down for longer then 24 hours

Question
QUESTION: Hello
I have a pregnant Shiz-tuz whose temperature has been down since April 10 and it is now April 12 she was mated on February 9,10,12,14,16,19 she has done a little nesting but not much she is still eating but not as much as before the 10 and she has been very clingy the past couple of days she will not let me or my husband out of her sight she also has a clear discharge coming from her vulva and is shaking a little

here are her temp

April 10
99.8 at 1am
100.3 at 2pm
99.1 at 6pm
99.2 at 9pm
April 11
99.2 at 1am
99.2 at 6am
99.2 at 1pm
99.0 at 6pm
April 12
98.8 at 12am
99.2 at 4pm
100.0 at 11pm

her normal temperature is about 100.3 and I was just wondering if this is normal or if I should be concerned and if I can expect puppy anytime soon or can I relax

ANSWER: Do you know what her normal body temp is when she's not been bred?

When you breed over the course of a week, your best bet is to split the difference and take the 13th as conception.  And expect pups in the next day or two.

Good luck.

---------- FOLLOW-UP ----------

QUESTION: Hello

No I don't know what her normal temp is but the week before the April 10 it was 100.3 to 100.8. Is it normal to drop that much and then come back up a few days later.

Thank you very much

Answer
It's a good idea to record her normal temp (for future reference) when she's not in season and pregnant.  

There are a number of reasons for her temp to go up and down, from laying in the sun (or on top of the heating vent) to a slight fever.  

I would keep an eye on her and expect pups soon.  A sure sign is she quits eating.

Good luck.