Worry not, it all sounds very promising really. Tilly, my dog, was not spayed either until later in life (I think she was 4 years old at the time, but that’s another story). She is a border collie-black lab mix, about 45 lbs and the best 40 bucks I ever spent.
I understand so much what you’re feeling, because even in those 5 short months, she and I bonded very closely. Since I knew the baby was coming soon, I got a jump start on training with her. Housebreaking was a complete nightmare (my first time!) but by the time she was 6 months old she had an understanding of basic commands and recognized several hand signals. These hand signals became indispensible later in life when she became deaf BTW. The reason I’m writing all this is to illustrate how intelligent and responsive she is. Ultimately, it made the transition very very easy.
It sounds like you’ve done a great job thus far with socialization. It is very important that you both continue to expose her to new people, situations although life is about to get very hectic.
Your dog’s breeds are well known to be loyal and good around kids. As your baby becomes a toddler you will be amazed how your dog tries to herd the baby. Fun times ahead! I really think everything should be OK. I have a horrible sense of smell, and Tilly would always signal when it was time to change a poppy diaper. She would follow the baby around and I quickly learned what that meant!!
Here’s kinda what I did with my dogs:
– continue to develop her training
– make sure she gets plenty of exercise
– do not play and do not allow anyone to play tug of war type games with her
– make sure she and the baby are well supervised at feeding times
– from day one make sure she is not allowed to jump up when people are holding the baby
– as the baby grows up, make sure you don’t let her jump up on the baby to say hello
– try to keep the family and friends streaming in regularly – that way she won’t become territorial
– take lots and lots of pictures.
– make sure you continue to spend time with her and just her alone every day, even if it’s just 15 minutes per day.
– go for lots of walks !! February is a bit cold, but once you hit spring, take advantage of the warmer temps and take baby and dog for walks together… they will make for priceless memories years from now