Hey there
I have been in the same boat
I have had success with Polaramine, Clarantyne Rapid (on a day when my eyes puffed up very badly everything calmed within the hour) and also Rhinocourt nose spray. My dr suggested all of the above as options as all are class A drugs meaning they may be taken during bf. It is always worth triple checking at the chemist or through drug info lines first!
Have you tried natural alternatives such as Garlic and Horseradish tablets?
Good luck
Belinda