I had this happen almost happen to one of my buyers once, and we just kept an eye on it while we looked at other houses. They did wind up buying another house and now all is well. I would suggest you keep an eye open and keep looking as well.
If you are happy with your agent, keep working with them. If not, as I have suggested in past posts, and will continue to suggest, is that as a buyer you Google every agent that responds to your question here on Trulia, learn as much as you can about who they are online, read their client testimonials, so you know what their clients are saying about them, and then give us each a call and just ask us why we think you should work with us instead of another agent. Then, pick the best fit for you and let them go to work for you with the skill and knowledge that they have. Good luck whatever you do.