In general, no--It is your agent's job to effectively present and follow-up on any offer that was submitted on your behalf. If you believe your offer was strong and competitive with other offers submitted, there IS a way to follow-up on an offer through the process.
In the case of a regular home sale (not REO/Bank-owned), it is ALWAYS within the right of a buyer's agent to request that your offer be delivered and presented in person to the seller and listing agent at an agreed upon time. In fact (although not often practiced), formal refusal in writing is required of a seller when your agent's face-to-face presentation of your offer is denied. In a multiple offer situation where a buyer agent is told he or she is not allowed to present the client's offer in person, it is a good buyer agent practice to ALWAYS recommend the listing agent provide the seller's refusal to you in writing. Granted, this has to be handled VERY delicately by your buyer's agent. Any sign of aggression at this stage will NOT be received well by a seller. Kid gloves only!
This is the most effective way I've used to handle this situation in the past, and I believe it is your best shot of putting your best foot (and offer) forward.
Best wishes Danielle.
Give us a call if you have other questions.