We went to the dr a few weeks ago and had an ultra sound being as i had a procedure done while i was pregnant and everything with baby was great heart beat was 165, and baby was right on target. We went to the dr on July 23rd and dr found a very faint heart beat but it was there. Now we went back to the doctor on July 30th and our OB doctor could not find the heart beat. She said baby is tiny and possibly behind the placenta hiding. Has any one else had this happen or does any one have any advice for me?