Your good anything after 32 weeks and you're golden. My was put on bedrest at 20 weeks. At 22 weeks shit hit the fan and the boys started to come. They were able to stop them but she spent the 2 months on bed rest at OSU. They were at the 32 week mark and were strong as hell. Little but strong, and by little they were about 2 and half pounds each.
http://i19.photobucket.com/albums/b180/smskinner/th_100_0158.jpg
http://i19.photobucket.com/albums/b180/smskinner/th_100_0159.jpg
http://i19.photobucket.com/albums/b180/smskinner/th_100_0161.jpg