Feeling down

Went to the dr today and found out I'm only 11 w5d. Thought I was further along. Tried to hear the heartbeat but I guess it might be to early. Then she tried to show me the baby on the ultrasound machine they wheel into the exam room and couldn't get a good look. Dr said baby looked ok but I couldn't make out anything. Flustered I waited to see my baby and got nothing. Is this normal to not be able to see the baby at this stage? Really worried something is wrong but the dr didn't seem concerned.