It sounds to me that the queen may not have matted for some reason; either weather or time but from my experience when the queen starts laying she is part time for mating and if she is laying only drones you may need a replacement (before your hive ends up drone bound). You can give her another couple of days and see but if she lays only drones I'd suggest not allowing it to go too long as drones are a heavy burden on a hive if allowed to exist in significant numbers.