@serita – I’m so sorry about your head pain!!i have had many problems with my teeth over the years and many extractions. With extractions I have left the space as is. I have one bridge, which is OK. At my last extraction I was advised to get an implant because the gap was too big. I declined and so far so good. I have a tendency to get autoimmune reactions.
I spoke to a friend recently who had an implant. The surgeon told her there was a risk that a nerve would be touched that can cause severe pain, even after implant is removed. Apparently, her surgeon was very skilled and so far all is well.
I hope you will get help soon with the pain.