My sister who is 29years old had got allergic reaction after the first does of Covidsheild. Her Shoulder, thighs got swollen! too much that even her regular clothes were got tighten. she's afraid of injecting 2nd Does of Covidsheild. can she take the 2nd dose? if yes then does she need any allergy meds before vaccination?( currently not taking any meds). She's allergic to certain food- brinjal, prawns. insects.