You'll be okay I wouldn't worry it, it is the worry and stress that is making you feel this way just remember the anxiety isn't harmful. If you had a BT the optometrist would have definitely picked it up no doubts about that especially after 3 tests haha. I had my eyes tested too yesterday as well and all well and good. Eye tests will pick up a variety of neurological conditions as well as high blood pressure and diabetes so rest assured. My aunt sadly passed away due to a BT and she had no symptoms at all apart from a huge seizure, it was the chemo and radiation that caused the most damage so no headaches or sickness symptoms. As you can imagine it is therefore one of my HA fears as well as a brain haemorrhage (which an eye test will also pick up on) due to distortion of the optic disk at the back of your eye due to raised intercranial pressure which is also present because of a BT so really don't worry about it you are fine and healthy just tired exhausted and suffering with anxiety like the rest of us. So all in all relax take a nice bath and watch a movie and you'll be right as rain
you are definitely not alone and in the right place as you can see from the symptoms page p.s. I'm aware I'm not a doctor however this guy definitely knows what he's talking about with BT and headaches so I would recommend you give this a watch go on YouTube and type in Dr. Len Cerullo, CINN Medical Director and Neurosurgeon and watch his video of BT symptoms, this should put your ind at rest