Just because the male mounted, doesn't mean they "mated". That is the first thing to consider.
They can lay a new clutch every 4-6 weeks, with or without interaction with a male, or they can never lay, with or without male interaction.
If there was actual copulation, the female can lay fertile eggs at about 30 days. Sulcatas can also store sperm from a previous mating, though anecdotal evidence strongly suggests they can only store it for a few months, compared to other species that can store it for years.
The female can also decide, for a multitude of reasons, to not lay and she can become egg bound, or the eggs can be reabsorbed.
What size is your female? Has she laid eggs before? Is she housed indoors or out?