I had unprotected sex a week ago and took an ''unwanted 72'' the same day.The next day I again had unprotected sex and took an I-pill 25 hours after.Day before yesterday I had some spotting (pinkish-brownish discharge) and yesterday I had my periods started (My periods came early as I had my last period the same month).
I had pain in my stomach yesterday which may be normal as I usually do have a pain while on my periods.I'm having normal periods till now except the brown discharge I had day before yesterday.Could I be pregnant still?
((Also,I am not experiencing anything unusual.I'm totally normal and the pain is also very less now almost zero.))
I'm very worried.I don't want to be pregnant as I'm only 15 years old at present.
Please help!!

The Ipill is not to be used as birth control. It can have some nasty side effects when taken just once, but you took it twice. The bleeding can be caused by the pill use alone.

It would be too early to know if you are pregnant and yes, pregnancy is a slight possibility.

If you are not prepared to be a mother, you have two choices... Abstain from sex entirely or use multiple forms of birth control.

Do I need to take a pregnancy test?If yes,then can I take it now (I'm on my periods)?

A pregnancy test is most accurate if taken when your period is two weeks late. It's too early for you to take a test.

The first thing you need to do is stop having unprotected sex. Those pills are not to be used like that.
It is too early to take a pregnancy test.

It's quite possible that the bleeding is from taking the pills, and not an actual period. As was said, irregular bleeding often is seen after taking emergency contraceptive pills... which are basically mega-doses of birth control pills, which not everyone should take. Now you will have to wait for next month and see what happens when you would expect your period. If that period doesn't show... give it some time in case it is just late, and test if necessary.

Since the possibility of a pregnancy would worry you so much, now is not the time for you to be having sex. Give it some careful thought. Pregnancy at your age has its own risks to your health and to a baby's. Baby's cost a lot of money over the years... you might have plans for college or a job before having children. Odds are very high that the guy you are with right now won't be who you are seeing in a year or two.

See how much he cares about your well-being. Tell him that you have decided that you don't want to have sex anymore because it is just too risky and see what he says.

Do not take chances with your health and well-being. IF you do decide to continue having sex, see your doctor for the best option available for you and ALSO be sure that your boyfriend knows how to use a condom correctly. Keep in mind that pregnancy will still be possible, even when birth control is used correctly, as no form of birth control is 100% effective.

That's for sure that we won't be having that risk again.It was unplanned and just happened between us.And if the bleeding is occurring due to the pills.Does it mean I'm pregnant?
And can I do anything about it at present to prevent it?

If the bleeding is from the pill, it won't meant pregnancy or no pregnancy. You'll have to wait until your next period is expected to see what happens. It really is just a matter of waiting to see at this point, but odds are in your favor that you aren't pregnant.