I understand how you feel. I lost my sweet Foxy girl April 29 of last year. The next weekend I went to an adoption event, but couldn't even bring myself to pet a single dog. I knew I wanted a Sheltie, but my heart was so shredded that I couldn't even think about touching a dog.
The weekend after that I went to an all breed show. Same thing, I couldn't even think about talking to a breeder, because I would have been a blubbering mess. The next week my husband told me to get a dog because I just wasn't at all myself.
Three weeks to day after I said good-bye to Foxy, I was bringing Phebe home from the airport. I still miss Foxy, but I also believe that Phebe is the dog I'm meant to have and she is teaching me so much that I need to learn.
thats how i was for the first few day, i went to the dog park a lot last week and didnt talk to anyone or interact with any of the other dogs, i dont know how it will be when i see a sheltie though that looks like harley i know its going to happen because a good chunk of sables look similar so im preparing myself for it

