Hi there! I have also been in the same situation, many of my college friends moved away and shortly after I found myself pregnant here with no friends! For the last two years I have tried playgroups, and finally decided to start my own. I now have a wonderful group of ladies and we are always looking for other moms and kiddies in the area. You and your sister are more than welcome to check us out! If you're interested the link is:
http://groups.yahoo.com/group/Lowcountrycaringfriendsandf...
We are a very laid back group with kiddies ranging from 9 years old to a few months and there are several women who are pregnant in there right now! I hope to see both you and your sister in there soon, and if you have any questions please let me know. my email is ____@____.com
Take care, and hopefully I'll talk to you more soon!
~K.