Quoting Meg Bloxham:" Yes. Laying down doesn't make them go away but it does help, especially if my eyes are closed. Lights and loud sounds hurt too "
Well a spinal headache feels better when you lay down and becomes excruciating when you stand up. That's because of the uneven fluid around the brain.
But it sounds like you most likely just have a migraine. That won't go away, I know the feeling. It SUCKS. I doubt it's a spinal headache though. If you do lay down and it hurts like, 5% and then when you stand up it's immediately jumping to 95% worst pain youve ever been in... it might be a spinal headache and you need a blood patch.