It's taken us nearly 5 years to conceive, and with the assistance of several IUIs, meds and endless amounts of surgeries and procedures, we found out we were pregnant just shy of 4 weeks ago. I am 7 weeks today. I had a confirmatory ultrasound at 4w3d and we saw only one sac. I had a repeat ultrasound yesterday, and we see two sacs, but only one baby. The first sac contains a baby with 129BPM and all looks well there. The second sac contains only an egg yolk from what they can see. Ultrasound pictures are listed below. Any insight would be appreciated! I know I ovulated twice, 3-4 days apart from each other. Is it possible the one didn't implant until later?? My doctor says a few things may have happened:

1. The baby didn't develop any further, thus it has died.

2. I may have implanted later than the first ultrasound or it was too small to pick up on US.

3. May be a blighted ovum or vanishing twin syndrome but told me my body should absorb it, if not I may need D/C or take a pill if it puts me or other baby at risk (this is highly unexpected).

I talked to him today because frankly, I have been distraught and devastated since I got the news and I need guidance and answers. The tears have been ever flowing and I just want them to be wrong. I'm thankful and gracious to have the one--please don't get me wrong--I just have hope, maybe hope or it's denial--that's running through my veins. I am setup for a second opinion tomorrow with a repeat ultrasound, and setup for again in 2 weeks. I am curious to know if anyone has gone through this, any wisdom, advice or guidance would be appreciated. I am storming the heavens with prayer hoping this baby implanted later and just needs more time, but also I'm willing to accept God's will and come to terms with it wasn't meant to be and perhaps there was something wrong with baby hence why it stopped developing. Any prayers, wisdom, help and guidance is appreciated. Thank you to all!

UPDATE: 7/13/17: I had another ultrasound on Wednesday and was told the baby stopped developing at the end of 5 weeks and they no longer can see a yolk sac. Contrastingly, two days before they said they didn't see anything but a yolk sac. No heartbeat on both. Of course, I'm devastated and beside myself. But it was decided that I will do weekly ultrasounds until the end of my first trimester (I'm 7 weeks now) and then we will reassess. I appreciate your prayers. Please keep us in your prayers.