I generally take all of my pills in the morning between 7-10am, depending on whether or not it's a weekend. I had unprotected sex with my boyfriend (we were both virgins), which I don't recommend even with the pill, but with this cycle I still had some spotting, and yes, dark brown blood right before I got my period. This was about about 10 days after I had unprotected sex, and getting a period that soon after that means that I'm not pregnant, so spotting is normal, especially if you've just started taking the pill. When you should worry about pregnancy is if you've completely missed a day.
PS: This might sound stupid, but does anyone know if I could STILL be pregnant even though I got my period 10 days after having unprotected sex? I just don't know how long it takes before an egg is officially "fertilized" and you stop having periods. I doubt this could take 10 days (and I haven't had sex since that last time. Long-distance relationship, that's college for you I guess...)