The blurred vision
which you experienced before a headache could be because of migraine
As a rule the blurring of vision should come down to normal after the attack..So don't worry about that.
If you still have a blurred vision, get checked up for any refractive error
Is the raised area on the eyelid? It could be a chronic inflammatory swelling of the glands.. or it could be an engorged vein also.
You can try doing some warm compresses for that.
Hope I helped with my answer. Take care..