Bethany, I'll add this bit of unsolicited advice, too. I have bad allergies all year round and usually have some level of congestion almost all of the time. Unless and until it causes a headache or bad drainage or I'm already sick with a sinus infection, I try to avoid decongestants. I find the regular use of a neti pot or sinus rinse to be as effective and it doesn't elevate your heart rate or blood pressure like a decongestant can. Plus, you don't have to show a driver's license or raise a red alert with law enforcement to buy it. You might talk to your respective doctors about weening yourself off of Allegra D and switching to plain old Allegra.