Hello Sky and welcome to HCM.
Thank you for your query.
Tri-
sprintec is a birth control pill that has to be taken as advised by your doctor, not more, and not less.
The usual instructions include taking it on the first day of your period, and then taking one pill a day. The 28 day pack contains 7 pills which are called the reminder pills, while you are on these you will experience your period.
Please do not take any extra pills, one pill a day is more than enough to prevent a
pregnancy. As you have already been on the pill since 2 weeks, and hopefully initiated it on the day your doctor has asked you to, and provided you have not missed a dose, then there is usually no requirement for you to have any other pills or extra pills.
At times, we do advise one extra method of
contraception, like the use of condoms, as there is a 2-3 % chance of failure of this form of contraception.
As you have been on the pill, and provided you have taken it the day you had
unprotected intercourse, you need not take any extra pills. So please, rest assured. The one pill a day course, is more than sufficient.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://doctor.healthcaremagic.com/doctors/dr-shoaib-khan/64581 . I would gladly help you.
Best wishes.