Hi I need help with getting a formal Dyspraxia diagnosis.

For years myself and my family were misled by an informal diagnosis of Dyspraxia when I was aged six through a group that took on children for partial respite. I haven't ever received help for it and it has impacted on my life in such a way I can't describe the trouble it has caused. I want to be able to access some help as it has just become such a burden and struggle trying to get through life without an official diagnosis. I even lost my University placement over this. If anyone can help or point me in the right direction it would be appreciated after a 20 year struggle.