I always wake up with a headache particularly behind left eye for 2 weeks now, today i noticed my left eye got bigger. I took a photo of my eyes and compared with my other photos and there’s a big difference. I am a hypothyroid.
If you have a personal physician I would call them immediately. If you do not have a personal physician and have access to a full service emergency room I would go there immediately. Your symptoms are concerning and some very serious things like brain aneurysms can cause those symptoms. Please do not ignore these symptoms.