I hear you. You need to make sure you're heard by the relevant medical folks. You need to think it out for yourself. I don't think you'd be here and opening up about your history if you were close minded.
Allergic reactions are not common. They are not rare. They exist and there are at least hundreds of kinds of them.
So listen to the professionals. Make sure they lisen to you and understand your concerns.
These vaccines, I believe, are better than those of the past, precisely because of the novel technology that enabled their creation. But they are not for every single body.