It sounds to me as if you are having migraines more so than headaches. I've already experienced these symptoms. Blurred vision
e.g. is an aura which is also termed as double vision
. Along with this comes dizziness
and short memory loss
. This is because it sounds to me as though you're having nausea also. Unfortunately because you're having nausea and aura, you had blurred vision (double vision) and that's why you couldn't see your phone properly. This does happen with migraines that consist of an aura. I honestly think you need to see your doctor and quick as you may need a migraine tablet. Migraines can last up to 1-3 days (24-72) hours. I'd also recommend you ask your doctor to do a blood test
and check your blood pressure. Will you let me know how you get on?