I have a male and a female dushound, my female has been in heat for 2 weeks and every time my male tries to mount her she becomes very upset. However she continues to back up to him acting as though she wants him. What do I do

What did the books you read before selecting your breeding stock say? There is much more to breeding quality dogs that just buying a male and a female. If you haven't made the major commitment it takes to do it right, we don't need you to be breeding. We slaughter millions of dog a year for lack of homes. I am not going to help you add to the misery. Try reading some of the articles at http://www.woodhavenlabs.com/images/breeding-off.jpg