Its very possible to get pregnant. On the pill my best friends did
She got a hpt as a gag gift and took it and was pregnant. Lol
But the pill can also make you feel not your normal self

It's def. possible my aunt and I both got pregnant on the pill. Same kind and had our babies 1 week apart.

I got pregnant while on the pill.
This is my second pregnancy.
I wish you the best of luck,
It could be your just late from coming off.
Try a test in a week or so if you don't have one before then.