Low blood pressure can cause this go back to your doctor and get it checked again,low blood pressure can be worse than high blood pressure,you may need treatment for it
Hi
Welcome to the MedHelp forum!
The pain can be due to migraine. Other than that it can be photophobia. Retinal detachment (this also causes flashes of light), iritis, uveitis, optic neuritis, corneal ulcerations and other afflictions of cornea, and cataracts are a few eye related causes for increased sensitivity to light. Hence get an eye examination done too.
Do discuss this with your doctor and get yourself examined. Take care!
I would read up on fibromyalgia and allergies. I have had similar experiences. It could be a migraine. My fibromyalgia can trigger my migraines. Good luck.