Sounds busy, busy, busy!! That's life though, isn't it. When one situation is handled, the next one pops up.
I don't know about sheep pregnancies, but with goats, you feel for their ligaments above their tails. They gradually soften, and when they disappear, birth is within 24hrs. I wonder if sheep are the same way. The other things, the udders and 'hoohas' are clues, but not definite. They are all different, just like people. :/
You can be sure, they will give birth when it is inconvenient. You will be in a hurry and about to leave somewhere...

So sorry to hear about your dog. That IS rotten luck!

I hope by now you are feeling better about everything. Sometimes it helps to just vent and air things out, and sometimes a good night's sleep can work miracles. ♥