Mildly freaked out

I had a bad hypo while I was sleeping last night (I could feel it, but didn't wake up) and when I woke up this morning, my BG was still low.

I got out of bed to get something quick to eat while I got ready for work and the next minute I was on the floor. I have no idea how long I was out for but I regained consciousness and my knees and head were in absolute agony. My husband had already left for work and I didnt have anyone to help me. I called in sick and tried to pull myself up.

After getting something to eat, I got back into bed and fell asleep for almost six hours. My head and neck hurt like hell, my ears are ringing and I keep wanting to fall back asleep.

Should I be concerned that I might have a concussion? Has anyone else ever just "dropped" like that? It's never happened to me before.