I was having unprotected sex with my girlfriend and the same day was beginning of her periods, and then we were inturupted in the middle and we stopped. . And then she was worried and we decided to go for pills and she had it excactly at second day. She told me about the bleeding she had at that night and from that day she isn't got her periods? 2 days have passed no signs of periods..
Is she pregnant? What to do now?

NO form of contraception is 100% effective, barring abstinence..

No form of birth control is 100 percent, the "morning after pill" if that is what she got ( under different names) But if you waited 2 days ( 48 hours) the pill is less and less effective the longer you wait, till almost no effect at 72 hours

So at this point, the morning after pill will effect the monthly cycle and may cause the first one to be late or not come. But about a week after the monthly period should have come, you do a pregancy test.

In the mean time, consider baby names, and things you will have to buy to have a bady,

But as I said she had been through bleeding at night after the consuption of pills in morning

No form of birth control is 100 percent, the "morning after pill" if that is what she got ( under different names) But if you waited 2 days ( 48 hours) the pill is less and less effective the longer you wait, till almost no effect at 72 hours

So at this point, the morning after pill will effect the monthly cycle and may cause the first one to be late or not come. But about a week after the monthly period should have come, you do a pregancy test.

In the mean time, consider baby names, and things you will have to buy to have a bady,

Sir,
She had pills in morning and also she noticed bleeding at night.

Does that means the pill has worked?

Not really, it can also be implantation bleeding, that pregnancy occurred,

It is now just a waiting time till the next period is due

As was said, no form of birth control, emergency pills included, will be 100% effective. However, since she took the emergency pills within the time frame that is usually suggested, it is likely that they will work... not guaranteed, just likely. The bleeding after their use is common. It is also common for her first period after using them to be off.

She should wait and see what happens when her next period would be due. At that time, if she doesn't have a period, she should try a pregnancy test.

For the future, be sure to use a reliable form of birth control, two would be even better, every time you engage in sex (emergency pills are not for regular use). You still won't be 100% protected, but it will lessen the odds of an unplanned pregnancy.

Ans as I said that we were interuped in between .
I didn't released ma sperms and she too.
Then also she took the pill because she didn't wanted the risk.
Is there still chances to get pregnant?

There will always be a chance of pregnancy when your penis is in her vagina regardless of what you do. The chances will just be lower with the circumstances you describe.