S.S.
Hi L.,
I had Placenta previa with my firstborn -- I had off and on bleeding for few months which actually scared me to death. My doctor was either more practical or too harsh -- she told me that more likely than not, you may loose it so be prepared. I was a software consultant, that means traveling every week from Florida to California -- changing flight with carry on and laptop, and she told me "No need to bed rest -- it won't really help". And my son was born fine .. so don't worry too much. I know few other moms now who had placenta previa and their kids are fine. Only thing is just to be careful and don't do things (like a lot of exercise..) if you have not been doing it already.
Take Care and good luck.