Does "rennet" In Cheese Trigger Migraine Attacks?

I have recently discovered what triggers my migraines- cheese. I visited my doctor, and she gave me a list of all of the possible foods that could trigger these headaches. On the list, only some cheeses were named. Due to the fact that I love cheese, I researched the ingredients in these cheeses compared to others not on the list, such as mozzarella. I have discovered that the cheeses on the list I was given all contain rennet, and mozzarella does not. I was wondering if this ingredient could be the reason I get these migraines. Please tell me what you think.