What Is Cervical Cautery?

Can you please confirm for me wht a cervial cautery is? and what should I do after having one of these. I also had a biopsy, eau hysteroscopy and ppelvis laporoscopy

I was also advised that I would bleed for 2 - 3 days however, I have only bleed for 3 hours, which followed the op. I am now loosing a pinky coloured discharge