Cervical Erosion

Hiya ladies I had a cervical erosion (ectropian) I had to have treatment last month as I bled and have bad pains after sex so they treated it by freezing it off. But since then the first time me & my partner had sex after the 4 weeks as advised to let it heal I bled and had pains the first time. I didn't bleed the 2nd or 3rd time just had the pains but last night we had sex and I bled quite a bit again and had the pains again. Has anyone else ever had this and if so does it mean the treatment hasn't worked or is there something else that could be causing it? If any of you ladies have had the same any help or advice would be great! Tia xx