Yes you can back out. Your agent should not be so timid. The fact that you cannot even tell if you are in escrow on your own transaction is quite ominous.
I would either start demanding performance or bail.
I will ask again. Are you in escrow? Do you have an escrow number? Do you know if your contingency period started? If you don’t know this then take things into your own hands and call the listing agent yourself.
The fact that you are getting more information from an internet post board then the agents involved in your transaction is odd.