placenta previa twice??

Just wondering if anyone's had placenta previa twice?? I'm currently 18 weeks with a baby girl baby #3 unfortunately baby #2 my son was stillborn in November 2016. I had placenta previa that was covering my cervix. I sadly bled at 25 weeks and went into labour 3 days later, after I had him I then found out I had a blood clot begind my placenta which caused it to come away from the wall and abrupt! We buried him on 14th dec 2016 & then a few weeks later on 31st Dec found out I was pregnant with this little princess. I'm currently complete high risk and have lots of scans an consultant appointments, so they are really looking after me. Went for a check up last week and found out my placenta is low again but it isn't covering my cervix this time & there saying it could move up. Usually in the uk with low line placenta they give t till 32 weeks for placenta to move up but in my circumstances there giving it till 28 weeks. I've been told to take it easy which I'm doing & not to over exercise which I'm also not, so I'm laying & sitting down a lot just trying to relax as much as I can with a Very active 6 year old! I'm absolutely terrified I'm going to loose this baby girl aswell and I am trying not to worry or stress but that's kinda hard! Just wondering if anyone had any similar circumstances? I know the hospital are looking after me and will take baby out early if need be but I really want her to cook as long as possible so I can hold a healthy baby at the end of this. It's driving me nuts cos I can't seem to see a happy ending and that's all I want. Similar stories would be much appreciated ❤️❤️