Miscarriage of one twins

Hey sisters
I'm needing to reach out to the mums who have lost a baby
I was pregnant with twins and found out at 5 weeks 5 days that I was having twins and because one of the twins was measuring small I had to have review scan 2 weeks lately well I took it easy for a week but I had a bad feeling that one of the babies wouldn't make it and after a week I went for the scan
I was questioned as to y I came early for the scan it was a very quick ultrasound with the lady doing scan she was very quick she checked the heart beat of baby a and then looked for a second at baby b and there wasnt a heart beat. And made the comment well that is dead.
No sorrys or anything she measure anything and as soon as I went in to the ultrasound the quicker it was over.
I have devastated for days i cry over anything i dont have any energy and looking after my other three children has been a real challenge with no help from anyone I'm grieving yes and i want to enjoy the baby i have left enjoy this pregnancy
So my question is how do u pick ur self up and get on with life and feel better within ur self.

Any advice would be appreciated thanks mummas sorry for the long post xx