Spotting 6 months after lletz

Hi, i had 2 lots of lletz for cin3 and cgin, first under general anaesthetic and then a second with local to get clear edges. I had the usual discharge/bleeding post lletz then it stopped but for the last couple of months ive noticed mid cycle spotting, its very dark brown or sometimes pink. I have my 6 month check up smear tomorrow so will raise it with the nurse but im so worried. Did anyone else have similar following lletz?