Miscarriage question...HONESTLY FLAT OUT.opinions needed!

Hi all... I've got nobody to ask... indulge me.... a lil backround info... Im 34y/o, I have had one miscarriage in the past, followed by a healthy term baby boy. On new yrs day, i found out Im pregnant again Well...I had my first ultrasound yesterday at 7weeks 4d....everything was there, but measuring at 6w 3 d and no heartbeat. I was devistated. The ultrasound tech said how sorry she was and documented it as 6w 3d fetal demise. I next went to the obgyn who said that the tech was pretty sure of no heartbeat, and told me I could insert pills in the vagina to induce miscarriage, or I could wait for nature to take its course, or I could set up for D and C. He did a cervix check and said it's a a little" open. I was so upset that I couldn't think straight, and honestly couldn't wait to get the hell out of that place. So I left in tears, broke the news to my husband and went into depression mode. In speaking w friends today, nearly all asked if maybe the dates were wrong, and baby is a week earlier? they're basing it off of the fact that I said lmp began on 12/2/16... maybe I had it wrong? I don't want to have false hope that the MD was wrong...but it's in my mind. when I miscarried last time I had cramps and bleeding....I have none of that now...please be brutally honest in your opinion... my plan is to wait this out... What do you think? Was the MD quick to jump the gun in saying I'm losing this baby??