You can check to confirm that your bid was successfully submitted by clicking on the bid and then clicking on the Quote tab. Here it will show you the published date which is the date that your bid was sent to your customer along with any information that was submitted.
See the articles below for additional information on Bid Requests:
Joining and Accepting a Bid Request
Bid Request - Confirming Bid has Been Submitted
Submitting Bid Questions & Messages