I have been using Tri-Sprintec for a couple years now. And I accidentally skipped two days/pills. I am a Sunday starter... I missed the last pill of Week 2 (Saturday) and the first pill of Week 3 (Sunday). I took both on Monday, including Monday's as well. So I took a total of 3 pills in one day. Has the effectiveness of the pill diminished? Am I ok to continue normally?