I'm so sorry for your loss
Many years ago we lost our yellow Lab Cheyenne to cancer and she was an awesome dog, she was about 7 years old. We ended up getting another yellow Lab that looked just like Cheyenne within a couple of months of her death. Long story short, it was too soon for us. Cheyenne was the perfect dog in all ways, temperament, obediance, personality, etc, and our new puppy just wasn't the same. She had lot's of issues that we just couldn't deal with. We had Molly for about 4-5 months and we never bonded with her. We realized we were trying to replace Cheyenne, a member of our family, which wasn't fair to Molly. We ended up rehoming her to a really nice family with a couple of kids and lots of property. It was very hard but we knew it wasn't fair to keep Molly. We just didn't have it in us to give here what she needed. We waited a little over a year before we got Lucee (black Lab) and she is wonderful! We were ready and able to give her the patience & love she needed to become the wonderful dog that she is today (she's now 3 years old). I'm not saying that you will have the same experiance but for us, I know if God forbid something happened to Bella or Lucee we would definitely wait at least a year before we were to get another dog. Again, I'm so sorry for your loss. You're in my prayers.