Thanks for your question and concern,it is obvious to have worry and tense in such case of oral precaution pills. You are taking these pills from a very long duration of about 4 to 5 years as you have told. First of all you must be very careful and should take complete knowledge about these pills. I think you are not taking the inactive pills so, let me tell you that these pills do not have any side effect on contraception but I will suggest you that because after taking that you can again start your cycle in around every 28 days. If you are not taking these active pills then in think after 7 days you will start a new pack and you must be very much sure about this. I must tell you that contraceptive effects can arise on your treatment if you missed a single dose of these pills. So, if you miss a single dose of these pills then it is not good from contraceptive treatment’s point of view. So, according to me I will advise you to take inactive pills also because this will be better and safer too for your contraceptive treatment. Because of this I think that taking inactive pills is really a better and safer option from contraceptive treatment and also from other point of view. And you must be completely sure about not to miss even a single dose of active pills. Vd is not seen in your case. Follow this and I am sure this will help you.Take care