### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
It s my first time using birth control pills and I got the set of pills (Lutera 28 day pill) about two months ago. The nurse told me to start the Sunday (which my period was supposed to come that Sunday or Monday). But for some reason my period hasn t come and it s been 9 weeks! (I m a virgin so I can t be pregnant). I finally got it today and I m not sure when to start it. Today is a tuesday, and I have finals this week I don t want to take the pill today because I don t know how my body will react. 1. So should I start this coming Sunday, or can i take it any time between today and and the day my period ends? 2. When I start my first pill, should I start with the hormone pill (white) or inactive (pink) pill? 3. I will be going on a week long family trip in the summer (July) so when should I take my pills to plan a missed period during that time according to the trip? 4. I would prefer my periods to come during the week like mon-friday. how should I know what day to take it? Please help. Thanks!

### output:

First of all boys begin with the active pills. There's nothing magic about starting on Sunday is just a convenient starting time. Certainly if you are not sexually active you can begin your pills any time you wish in your cycle.  You should be on the pills two weeks before initiating sexual activity if you wish to wait pregnancy. It may take several months for you to figure out your normal cycle on the pill. You may have spotting or breakthrough bleeding. Hopefully by July things will settle down, and you will know how things are going to go. You can always skip some all the placebo pills to manipulate the start of your period.  There is no medical reason you have to bleed every month.