I did a big yawn while laying down and i got this extreme pain dizziness in my head and now my neck and throat have been very sore, which is causing headaches, did i injure myself and will this go away on its own, or do i need to see a physician ?

It sounds like you may have a pulled muscle in your neck from the big yawn. A pulled muscle in your neck will cause a headache because the muscles attach at the top of the head. So, if they go into spasm, that will be experienced as a headache. Perhaps apply some cold or heat to your neck/head, whichever feels better. If this does not feel better over the next couple of days, then see your doctor.