Honestly, it's hard to say with certainty kasi contraceptive effectiveness really depends on so many factors, timing, your cycle, how consistent you are with the pills, kaya the best thing is to chat with your OB about this, especially since you just restarted after 6 years off and may have missed a dose. A few of us mums went through similar scares and ang peace of mind from talking to the doctor was worth it, honestly, kasi sila ang makakaalam ng actual risk based sa your specific situation at cycle. If you're worried, pwede ka ring mag-pregnancy test in a week or two or consult agad, better safe than sorry talaga!