Endometrium measuring 24.8mm. Is this cancer?

Hi everyone! I’ve been experiencing bleeding between periods for a year, and had a scan today that showed my endometrium lining was quite thick, especially for 15 days post bleeding. It’s measuring 24.8mm, and while the doctor didn’t say anything about it other than it was unusual, google is suggesting that anything over 20mm is cancerous.

I have a follow up with my GP tomorrow, so I will discuss it with him, but I’m sat in a car park right now terrified. I’m only 26.