What Is The Fleshy Discharge Off Period In Spite Of Taking Birth Control?

Hi, I'm an 18 year old sexually active female. I recently experienced bleeding after sex and so went to my GP who referred me for a cervical biopsy and possible ablation. I had the biopsy on Wednesday and today (Friday) I went to the toilet and passed what appeared to be a flesh like substance. I have googled this and it appears to be 'normal' for women on the pill who run packs together as I do. However I am not currently menstruating as the other women were. Is this normal? Or is it something to do with being prodded and poked during the biopsy?