The pill

Andrea
So my doctor put me on the pill a couple of weeks ago, I wasn't due to start my period just yet. So she told me to take the first pill on the day I start or the next Sunday. Yesterday, i thought I had started, but apparently it was just a tiny bit of spotting. But before I realized this, I went ahead and took my first pill. Not one spot of blood was on my tampon when I took it out. Today, I'm bleeding very lightly, but it's brown. Yesterday the spotting was red. My problem is, I have no idea if I was supposed to start my pill yesterday, today, or wait till I'm full on bleeding. I never start like this, it's always HEAVY bleeding right away. I tried calling the Dr's office and had to leave a message, still no response. Please help! Thanks in advance!