Hi Vagner,  I am sure you will receive lots of help with this one; however,
I'll throw in what I know.  To have a laying queen, the hive is queenless. A laying queen produces only drones and she has a sporatic laying pattern.  So
if you have little worker brood, a lousy laying pattern, and lots of drone
brood, you have a laying worker.  I hope this helps.  Cheers, Jane