Yes, the I pill can impact a woman's cycle. It's best to use this as an emergency and not as a means of contraception.

In most cases no.

Normally you should have a period within 2-3 days after you take emergency contraception. If you do not have a period, repeat a pregnancy test in 2 weeks again. If pregnancy test is still negative, there could be other hormonal problems, see your OBGyn to discuss further. Also, if you are taking emergency contraception frequently, it is a good idea to discuss contraception with your OBGyn.
Take care!

Yes, it can delay your period -please be careful since emergency contraception is only 95% effective, so continue testing for pregnancy if your period does not come. This pill is not designed to be taken every time you have sex, especially if you are regularly active sexually - please be aware it could disturb your cycle and confuse your body if you use it regularly - 1-3 times a year or so is ok - please consider regular birth control which is safer if you need to use it more often then that.

Yes, it can, remember whenever you take pills it can affect your hormonal imbalance, so be careful, I will advise you to stay on Ocps to regulate it.

Yes

There is no question it will affect the menstrual cycle, typically causing bleeding a few days after taking and shifting the hormonal cycle as well. Using the I-pill as a routine method of birth control is not recommended for a variety of reasons and will not be effective every time. If you are not using a method, even condoms, you should seriously consider using another method and saving the I-pill for emergency situations - like the condom broke.