Apologies I'm new to Mumsnet so not sure if I'm doing this right. My son sat his A level Physics paper this afternoon. He is predicted an A star. This morning he felt like he had a cold. I suspected it was hayfever and he used Beconase. When the symptoms didn't improve I gave him an antihistamine tablet. He went off to his exam not feeling great. During the exam, he felt terrible. His nose was running constantly, his eyes were itchy and he felt completely distracted. Is there anything we can do? He has worked so hard and is devastated. I would be grateful for any advice. Many thanks.