Was hoping to never post here.

I had my first ultrasound yesterday. I am supposed to be 12 weeks in a couple of days but am only measuring 6 weeks. It was a terrible afternoon. We were at the hospital for nearly 4 hours and in that time they did an abdominal ultrasound, two transvaginal, took 7 vials of blood and I had to meet with the midwife on call who I had never met before. She kept saying "it's not bad news! It's no bad news!" There's a baby measuring 6 weeks and my blood work is normal for a six week pregnancy but I charted my temp and used OPKs religiously so I know when I ovulated and got pregnant. I know what is happening is a missed miscarriage. I have to go back for more blood work in a few days and another ultrasound in a week. The waiting is awful. I'm basically sitting around waiting to miscarry. I started having some light cramping today and am wondering if I may be starting to miscarry or if it is pain associated with the transvaginal ultrasounds. I am just so devastated because yesterday was supposed to be amazing and turned into a nightmare. We were even planning on announcing this weekend and I had gotten a silly onsie made that says "my big brother is a (picture of a cat)" I'm just not really sure what to do next. I'm posting here to hopefully get some support and hear similar stories. Also I'm scared to death of miscarrying because I've heard horror stories so I would like to hear people's experiences with that. Thank you all so much for any responses and I'm really sorry you all are going through something similar.