Hi there. Well, while it is normal to be irregular, I'm not sure we can say this is completely normal. I would talk to your mom about it. They probably will want you to have a period at least every 3 months. So, perhaps a doctor's visit is in order. take care and good luck. remember, your mom is your best source of information. good luck
It's completely normal... Since your hormones are not yet in a proper cycle you will have irregular periods and after a yr it'll be regularised