Allergy during pregnancy

Hi Mommies! Question lang po, sino po naka experience ng nagka allergy during pregnancy dahil sa food? Nag citirizene po ba kayo as a prescription by Ob? Planning to have a check up din today kasi sobrang nangangati ako may nakain akong food na nagcause ng allergy ko and want to know in advance ano ung possible effect po kay baby . :( Thanks po.