Maxi Pad flushed down the toilet
It is completely impossible to determine if the maxipad is still in the house plumbing or not with the information given or without a first hand evaluation of the sewer system. 

The only ways to be really sure are one of these:


Run a cleanout snake down the sewer to check if it can snag the pad and pull it back out.
Run a remote inspection camera down the sewer to visually inspect the pipes to make sure the pad is still not present. 


What choices do you have?

Either do one of the above steps or just wait, keeping your fingers crossed, and hope for the best whilst being prepared for the possible nasty mess.