Swollen eye in between allergy medication doses

Patient: I took one dose of desloratadine last night, for the second night in a row as prescribed by my allergy doctor to help with my allergies. This morning I woke up with a swollen red eye, and I think it might be the result of allergy. What should I do? Should I take more allergy medication?

Symptoms: Sneezing occasionally, swollen red eye, tiredness.