Started Period Early Help!

Ive been on the pill for a little over 3 months now and I got my period 2 days early. Now im confused as to when I should start my new pill pack. I am a sunday starter usually. Today is saturday I just finished a full pill pack today and I just got my period. I was suppose to get it on monday. So now do I just start up a new pill pack tomorrow and not take the sugar pills for the week? Im so confused and is this normal to get your period early while on the pill? I thought the pill was suppose to make your period on time every time. I have not missed any pills since I have been on this, and I always take them on time.... My periods have been regular since I started taking the pill up until now..... Before I started the pill my periods where sometimes off by a day or 2. Im confused when im suppose to start the next pack.... Im freaking out here. Please help