Newbie and worried

I'm worrying while waiting for results, radiologist said he saw a polyp on vaginal scan, when I had hysteroscopy the consultant said theres no polyp but needed to take biopsy? I'm confused? I asked him loads of questions as I was anxious but he was very evasive and said I'd receive a results letter in 2-3 weeks time?

Has anyone else experienced this? Why would radiologist say it was a polyp and measure it at 10mm?