movie about a poor teen girl hiding pregnancy from family & school

No it is not all the typical movies that have come up in Google.
I think it may have been a "made for TV" movie.... Late 90s early 00s possibly... She gets knocked up in the backseat of a car and she fakes her period with nail polish on a maxi pad.... I've been searching a long time for this movie lol oh ya... She ends up wearing a girdle and then she goes into Labour at a school dance, her water breaks in the bathroom....

The story of the movie seems interesting especially when she gets knocked up in the backseat of the car and fakes her period with nail polish hahaha, awesome!! I would also like to watch this movie if anyone came up here with the right answer!