Me & my had unprotected sex on 22nd may, however she took a pill on second day. But now she is not getting her periods which is delayed by 3-4 days from her due date. Is she pregnant?? How many days periods can be late from the due date??

There are many factors that can affect the regularity of a woman's cycle, pregnancy is just one of them.
Has a HPT or Blood test been taken ?

There are many factors that can affect the regularity of a woman's cycle, pregnancy is just one of them.
Has a HPT or Blood test been taken ?

No there is no such test has been taken. When should we go for a test?? I mean it just a 4-5 days delay so shall I wait for some more days or shall I go for the test?

December 23 we had sex within 24 hrs she had taken a birthcontrol pill... nd her period is on dec 4th now it is feb 1st is there any chances of pregnancy..

Of course there's a chance of pregnancy - please stop asking the same question.