Actual period now?

Lilienne
Some of you might remember a week ago I thought my period was a week early, but some were saying it was spotting. I've never had spotting so I just disregarded it and thought I just had an early period. But today my actual period started. Full, bright red blood flow. Now, my mom says spotting is normal, since I'm still young (I'm almost 23) but my period is usually regular, only a day or two early or late. Is she right? Am I fine? I'm a virgin and have never been on any birth control nor any other meds.