There are no problems with you looking at the home. Just make sure you tell the listing agent that you do have an agent and if possible give them their card. I always make sure my buyer's have a small stack of my business cards so in case they decide to go to an open house or new home community they can give the onsite agent my card and let them know they have representation. This way they will also not be constantly contacted by that agent trying to sell them a home.
If you like it them by all means wait till you speak with your agent before proceeding. Your agent will consult with you and give you more information on the home that you might not have seen or heard yet that will affect what you offer in price.
Larry Story
Coldwell Banker Triad
