So lost

Someone please help shed some light my dr told me today that my precious baby had no heart beat I was supposed to be 9 weeks exactly today she said it looks like baby stopped growing at 7 weeks 2 days which is really hard for me to grasp because exactly at 7 weeks and 2 days I had an ultrasound an saw baby's heart beat I have been having small clots an what looks like bloody string still haven't had any major bleeding or any cramping at all when does everything usually start happening I'm so devistated an just want to brace myself for what's to come