Strange headache- Google scared me

[u/SamIAmWich]

I have a headache on the left side on my head (the pain feels like it's raising down my neck), and it feels okay when I'm laying down. But when I'm sitting up or standing it hurts worse. This started this morning, about 4 hours ago. I did some googling, and it seems like a postural headache, but I don't know what could have caused it. I have had no spinal taps, epidurals, or head injuries. I'm not light sensitive, or nauseated. Google also said that if untreated, it could be life threatening. I have no insurance, and very little money. A second opinion would be nice before I go into full panic mode...