Horrible time for you so sorry to hear it. We have been through it five times with our dogs over the years never gets easier. Give them the best life you can is all you can do, Only downside to having a dog is that their lives are always shorter than ours.After our last dog died with cancer nearly three years ago, we had another a few weeks later. If it is possible for you to do it I would recommend having another when you are ready which is down to the individual but it works for us, It certainly helps you to move on and think of the future which is better than thinking about the past which you can do nothing about.