Sasha There is definitely hope hun just try and stay strong it must be so so hard. A HB was not detected on my scan last tuesday either and when she said I will book you in for 10 days time and sent me off I was like so thats it then. Whats next. How am I going to get through the next 10 days. Every cramp every bleed its just been awful. My heart goes out to you it really does.
They should of taken bloods for you then in two days they check levels thats the best thing to go by. I am praying for you.
As for your sister and friend its going to be a very emotional time for you watching there milestones with scan and midwife appointments etc and when they announce your be so happy for them but its understandable how sad your be and they will be sensitive towards you as well hun. But I am sure by the time their babies are born you will be expecting again so wont be as bad I promise you. Time is a massive healer as we all know it never goes away but it gets easier to deal with day to day life things.
You need to rest up now hun read up on positive stories. As it stands the pg test is still positive and as someone posted whilst theres no cramps or bleeding there still a little bit of hope.
Big hugs lovely xxx