We can’t really say for certain that it’s die-off or your allergies. You can raise the amount of molybdenum to 3 x 250 mcg pills a day to see if that helps. This is the amount a lot of us took during the worst of the die-off period.
If you’re located in the United States you can also purchase Candidate made by Native Remedies on Amazon which will help with the die-off symptoms. You should also be drinking Nettle Leaf tea 3 or 4 times a day every day.