So much news, so little faith

I had a second ultrasound this morning, after my other one last week because I had bleeding early on in pregnancy (not just spotting). She told me I hadn't been expecting one baby, but TWO. Sadly, baby b passed away at 6weeks, 2 days. Even though baby a is still in it's sac, it has not grown as much as it should. Baby had a heart beat, but it is very weak at 103 bpm. I am feeling so confused, and lost. We miscarried in June and want a baby SO badly. The doctors aren't hopeful and we will know next Wednesday what our next step will be. I want to feel hope but I don't want to get my hopes up too high. Just feeling sad.