http://www.wccerie.org There's a women's center in Eerie, PA that might be a good bet. If not, check your phone book for "crisis pregnancy centers" or "women's centers" or just plain ole "abortion clinics", or you can try going through your GP (Family Doctor).
An average first trimester abortion in the USA costs about $400, so it won't take all your savings.
After that I would really stress that maybe being abstinent for a year or two would be a good bet or you need a more foolproof method of birth control. Condoms alone obviously aren't effective for you and you probably wouldn't remember to take a pill at the same time, with two busy kids to look after. Have you thought about an IUD such as the Mirena? It's 99.9999% effective and lasts for 5 years and is cheaper overall than other birth control methods and there's basically no way to mess it up since it's installed by a trained Gynecologist and that's it. Nothing to remember, change or anything.
More information on birth control:
http://www.womenshealthmatters.ca/centres/sex/birthcontrol/index.html
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Holly.
Mama to Hunter Kai