I haven't read all the responses, but wanted you to know I'm thinking of you.
I had placenta previa grade 3 that went undiagnosed in my pregnancy until the c-section! All my ultrasounds kept saying nothing was wrong, but I had bleeding episodes that landed me in hospital - @ 28 weeks and @ 35 weeks. (I also had one episode in between the 28 and 35 week ones, but didn't even go to hospital for it, as it happened on Christmas Eve.)
I was home at 28 weeks within two days - but in for 3 days @ 35 weeks before I had an in hospital episode, and my obs decided to remove DD at 36 + 2.
I am now too scared to go back and have another baby, as it has really shaken me (ie, knowing that had I gone into natural labour, there is a chance I could have died!)...it was only post my c-section that I truly understood what placenta previa was all about!
Good thing for you though - they are aware you have it and diagnosed you. You need to get plently of rest and try not to lift anything (including washing baskets) or stand for too long! Also try not to stress, they know about it, they can take bubs out when bubs is ready and life will be a blessing for you! smile
PS, my DD is now 4months and very healthy - so definitely no impacts on the little life you're currently creating smile