While the general answer is yes, you can work with your own agent after the listing agent showed you the property, it's not so simple. The question of "procuring cause" will probably brought up by the listing agent. The listing agent will say - "I was showing this property to this buyer, so I need to be paid". Your buyer's agent will be saying "But I brought the contract to you". The "discussion" will start about who gets paid what...and you'll be in the middle, with the seller following right behind you.
Not fun. Maybe consider buying another property with your own agent?
Beachfront Realty, Inc.
have you already seen the property? if so, feel free to call me to discuss your specific situation. 603-289-3509.
Understand that the Buyer's Agent you choose will owe a % to the Listing Agent for showing you the property. But this is between them, really not your concern.
This is part of the agreement that Realtors have with each other.
Good luck and may God bless