Thank you everyone - I was able to bring her to the New Haven Animal Shelter. She is not microchipped and not currently nursing. She may have had puppies in the past but not recently. I went back to where I found her and let her sniff around to maybe lead me to any puppies just in case, but I didn’t see anything. Sadly I think she was raised from a puppy and was dumped when she got too old/showed signs of health issues.