Well you can still fall pregnant on Birth Control if your not using condoms aswell but its very unlikely, it could be due to changes in your lifestyle such as stress, different eating patterns or exercise. theres alot of different things that can affect your period. so have a think about anything that has changed emotionally or physically lately and if your still not sure you could go see your doctor.
Yes
If not pregnant, lighter periods are due to infertility.
yes, it is possible. get a pregnancy test.
no you can not.
yes, you could be pregnant take a pregnancy test.
Odds are she is just having an irregular cycle but if you feel that she could be pregnant have her take a home pregnancy test and/or see a Dr.
no cause you never had sex
You can not be pregnant if you have your period at all. However, if you have missed a week of your birth control pills you do have the chance of becoming pregnant if you have unprotected sex.
It could be because your body is not used to it yet, or u could be pregnant.
There is no chance. If your period was on it means that there is no way that you could have been ovulating. Don't worry.
could you get pregnant if you have not gotten your period for 2 months?
could you be pregnant if you period was short and light