seriously depressed! was told 3 weeks ago that we are having twins..two sacs...two heartbeats...one was in the 150's and…

seriously depressed! was told 3 weeks ago that we are having twins..two sacs...two heartbeats...one was in the 150's and one was in the 160's....they were doing two different things but caught in one picture together...then this week two ultrasound tech and two drs only found one baby.....one drs said she saw what looked like baby number two hiding behind my big baby....the specialist dr just a lil bit ago told me it was probably a reflection off the uterus....BUT HOW...one baby was kicking its legs and turning its head while the other was running away from the transvaginal wand thingy...im super sad and in denial....i still feel like something isnt right!!!