Here's a web page with fitness requirements for the Marines and diet and exercise tips to get ready.
http://www.military.com/military-fitness/marine-corps-fitness/
A previous person suggested the morning after pill. Some women would need to take one every day. Why not just take a birth control pill?
They can't afford birth control pills but can afford an abortion? The pills are free on medicaid, why wait until you need an abortion?
If you want to use the internet you can do so without finding that stuff. However, if you do accidently stumble across it don't get upset about it you knew it was a possibility. The world is full of it.