kaji,

What were you doing that night? Why were you out driving so late?

Could it be that you just exhausted yourself and started to fall asleep?

Why can't you keep your health insurance going, COBRA or something?

So, are you working or a student supported by your parents?

Why can't you go to an Urgent Care Clinic? Most health insurance has a high co-pay for the ER compared to an Urgent Care Clinic.

Are you taking any meds?

It seems you should have access to some kind of medical exam.