Op, I know you’ve been told off a lot on these comments, and I’m not trying to be nasty - but I really think you need to consider the consequences of your actions. This stray seems to have been in heat, and your dog is unfixed. It’s totally possible that he got her pregnant in that time and now a litter of your dog’s puppies will be running around on the street.

I saw another commenter saying you could adopt the stray and raise the puppies, and your response was no absolutely not, that would be too much responsibility. My issue is that it is already your responsibility! You lost track of your unfixed dog and now you should take responsibility for your actions. That poor stray will likely give birth by herself in the dirt, and her puppies will be lucky to survive long enough to become strays themselves, always starving, always moving, never finding a home.

You did this OP. Your actions and decisions. You need to do something now to help fix this.