Hi I am new to this site and just happened to send first post when I saw this. I am 30 and had fibroids diagnosed last year by ultrasound. I have two small ones, main symptoms heavy periods, but Ive had those since I was 18 so I reckon theyve always been there. Anyway they are completely harmless and quite common. A large number of women have them and don't know it. They will NOT turn cancerous. I decided not to have mine treated as this could have affect fertility. They are just a pain in the bum really. Dont be worried about them, they only cause major problems if they grow very large(highly unlikely) and press on bladder etc. They do UFE procedure here in Ireland anyway, they sort of cauterize the stalk, minimally invasive. But there are lots of options if they are bothering you.
Best of luck