Chloe hasn't had her first heat yet either . I was starting to wonder that since she is so little maybe I missed it somehow because she is 9 months old but since yours is 10 months I'm guessing she just hasn't had it yet.
I was hoping to have her spayed before her first heat. Our appointment for both dogs was for next week but Sydney ( my 3 year old dog) went into heat yesterday
so I will have to reschedule.
I don't use the disposable diapers on Syd , she will tear them apart in minutes
I use the denim washable ones with the throw away liners for her.