Post total hysterectomy

I had a total hysterectomy nearly 4 years ago due to high risk hpv and low grade changes. 

I have colposcopy smears every six months.

They always come back with the same results.

I had another colposcopy in September and the results are the same but, the colposcopist Dr said, she 'didn't like the look of an area' and suggested I have to have a general aneasthetic for a more indepth examination, a biopsy and hopefully lazer ablation.

I am obviously very worried. Can anyone give me some advice of what is going to happen next and what it actually all means.

Thank you