Horse with low temperature?

[EternalVetBills]

I've just bothered my poor vet for the umpteenth time over the last 3 days, and am now second guessing whether it was vet worthy or not this time.

Horse hasn't been right for about a week, vet cam to her last night and took bloods to run and test for Cushing's. Not temperature as of last night but she told me to take it twice daily till bloods come back. This morning it was 36.4° tonight it's dropped to 35.1°. Am I being premature in my worrying? I've messaged vet and just waiting on her to get back to me

 

[Barton Bounty]

I would say u are right to call vet, very unusual for the temp to go low in warmer weather

 

[EternalVetBills]

I would say u are right to call vet, very unusual for the temp to go low in warmer weather

Okay, thank you. Vet not seen my message yet, I'll give her a ring if i don't hear by 5.

Should've added to my other post, the thermometer is working fine, I checked my Mum's pony and he's 37.1° which is his normal.