If she has not been spayed then she is marking, she is letting all the male dogs know where she is. Before I had my boyfriends 8 year old Golden Retriever spayed she peed, right in front of me in the house 2x's. When I asked the vet about it she said she is marking so all the male dogs would know where she is. If you want this problem to stop you need to have her spayed. You can find low cost clinics in your area if money is an issue.
In the mean time I would stop taking her for walks ( for your sanity) and just throw the ball or whatever for her exercise.
For the pulling you can try a Gentle Leader, they work great and no more pulling. Good luck.