I'm sixteen now turning seventeen and since I was 12 I had very irregular periods skippin 3-4 months at times. It was most unpredictable.(during that time i was diagnosed with hormonal imbalance by my doctorin reference to my acne) But since november it has become regular and then last month my period was 10 days early. I am now seeing my period 9 days early from that last date! Both of these periods were lighter than normal but not shorter. I have no idea at all of what is going on and my mother doesn't seem to care so she won't send me to a doctor...