Fruitful
Sorry to hear about the placenta praevia. I had exactly the same thing, only I started bleeding at 27 weeks and was admitted to hospital then. They tried to discharge me after a week once the bleeding had settled down, but I bled again on the very night I was discharged and ended up staying in until dd was delivered at 36 weeks.
I think, from my experience and from what I was told, that it's very very unlikely that your placenta will move. I'd plan for a cs if I were you. I don't know what your experience with dd1 was like, but certainly my elective section was a brilliant experience (although I must say it took me most of my 2 months in hospital to get my head round the idea ... I had wanted a home birth) and very unlike the experiences I've heard about from friends who had emergency sections.
I can sympathise too about not wanting to stay in hospital. All I can say is that two weeks, in the overall scheme of things, is not that long (I was in for 10 in total... thought I was going round the twist... aaaaaaaargh!) and it's worth it to ensure that you and your baby are both fine.
The problem with placenta praevia is that it is so unpredictable. I had three heavy-ish bleeds in total, plus a few episodes of light spotting. Thankfully I never had a full-blown haemorrage, although I did (it seems) lose a 'small lobe' of the placenta during one of the bleeding episodes. (I didn't realise this at the time, thought it was a clot, but when dd was born they realised that the placenta wasn't all there, so surmised that a bit had broken off - we think this is why dd was pretty small for dates.) However, if you do haemorrage it could happen with no warning whatsoever and could be very serious. I was very keen to discharge myself from hospital at the beginning (see above, re. going round the twist!) and they called my husband in and basically told him that I HAD to stay in because I could bleed to death between our house and the hospital (... and we only lived between 5 and 10 mins drive away). I have a feeling that they were exaggerating a bit, in order to stop me discharging myself, and also because I had a history of on-off bleeding, but even so, it did convince me of the importance of staying put. (On the negative side, it has also convinced my dh that pregnancy is highly dangerous and he could lose me at any minute, which made for a stressful pregnancy with dd2, even though I had no complications whatsoever... but that's another story!)
If I were you, I'd avoid doing any kind of strenuous activity (e.g. hoovering!). I'd also be quite nervous of being on my own too much (I'm with Moomin on this one), just in case. Chances are, you'll be fine, but better safe than sorry.
I'd also be asking my midwife if there are any other precautions you/they should be taking. Like Moomin I had bloods taken to be cross-matched and saved twice a week, just in case I needed a transfusion. I also had steroids (dexamethasone) to help mature the baby's lungs on a weekly basis. However, this may have been because I went in so early (27 weeks) and at the beginning they were planning for dd to arrive there and then (they even showed us around the SCBU, in case she needed intensive care... thank God it never came to that). By 32 weeks your baby's lungs may be developed enough to cope even if s/he were to be born now.
Hope this helps, and I hope I haven't scared you.