This is seriously weird. Every other year I get hayfever in late May / early June; this year I got it badly all through April (*much* earlier than usual) and then it cleared up in May and I was so happy. Now it's come back again! I'm not the only one suffering in this way, either - DH has it the same and several people in the office are adding to my sneezing chorus with harmonics of their own.
Atishoo.