So I hope somebody else can share their experiences as I am in a total state!!

So I have been having irregular bleeding for a month... I had the contraceptive implant put in this January so I thought I was that.... but I now have bleeding after sex and also bleeding from the vagina when I have a bowel movement...

I have seen 2 doctors about this. They have referred me to colposcopy. But they said I have an erosion of my cervix? But I'm so so worried that it's cervical cancer. I had a smear test only 1 year ago and it was normal! But so much can change in a year can't it??