Fibroids 👎🏽

Can a fibroid be mistaken for an early pregnancy? I had a transvaginal ultrasound done today and my doctor said it seemed to be a fibroid on my uterine wall. Him not knowing I was suppose to have my period today and it never showed. My mom in the room had said are you sure it isn’t a baby? And he had mentioned he didn’t hear a heartbeat so no. But I would be way to early to detect a heartbeat. Just wanted to know the possibilities of it being an early pregnancy or if anyone has experienced fibroids? I’m 20 and he said it was rare to have fibroids so young.