
Hiya x
As you know i have the same breed as you , Callie did not really show many signs and believe me i was on nipple watch every day .
Really not many changes at all , i guess her nipples were slightly darker ( deeper pink ) and i did notice on a couple of dsays she would not eat 1st thing in the morning , those days she wanted her food nearer lunch time lol
Had her scanned 30 days post mate and 2 pups were visable .... so your girl may not show any signs especially being the build that they are .
Good luck for Wednesday xxx
Forgot to say her lady bits also stayed slightly more swollen after her season ended ... don't know if thats any help lol