I have gotten this question from clients many times over the years. The short answer is no, you are not bothering your loved ones in Spirit by communicating with them. Your loved ones want to communicate with you as much as you do with them.
In fact, your loved ones visit you and give you signs that they are still with you. Spirit has shown me that the physical body is like a car. When the car breaks down by the side of the road, we get out and keep walking. That is our soul, our spirit, which never dies.
We are spiritual beings having a human experience. When we cross over to the other side, we go back to having a spiritual experience. Our loved ones, including pets, will be there to meet us when we pass.
I don't use the word "die," because there is no death. I call it life afer life. I hope you know that your loved ones will be waiting for you when you cross over, and in the meantime, they will visit you and show you signs, such as a specific song that comes on the radio when you need comforting, repeating numbers, lights blinking, or your cell phone or tv going on and off.
There are so many ways that Spirit tries to get our attention. The more you believe, the more you'll receive. There is no such thing as coincidence. When you see a sign from your loved one, say hello and thank them. They are just a thought away.