You know, once you have an uncomfortable experience that repeats it is normal to have anxiety around it. I don't blame you for being scared for it to return. Did they think you had a migraine? that can often hurt behind the eyes. Did they give you any advice if you feel it happening again. Often things like that have a bit of a sign before it really happens. When I got migraines, I would get a tingly head which is hard to explain but it always was followed by the mind numbing migraine.
Hey, I think that is great that you have lost some weight and it is helping many things. I hope that continues. We have a group here of people that chat about losing weight, give ideas, things to eat and support each other. Want the link? It's a community here at medhelp. Would love to see you there!