If you thought your pollen allergies were bad already, it’s about to get worse. That’s the word from Dr. Leonard Bielory, an allergist, immunologist and researcher in New Jersey who studies pollen trends and treatments. “The pollen storm is beginning,” Bielory told NJ Advance Media Tuesday morning. “If you go out to your car now, you can draw the word pollen.” Bielory said the first phase of this year’s allergy season — tree pollen — started a few days earlier than usual in New Jersey in March, but the string of cool and rainy days slowed the production of the yellow powdery substance. With wa…