Nervous

So we go for our big 20wk ultrasound tomorrow afternoon and I'm so nervous something will be wrong..we haven't seen the baby since 9wks and we heard the heartbeat at 14wks...anyone else get nervous...I'm so in love with this little one and just don't want to get my hopes up

:( but everyone keeps saying your 19wks..if something was wrong your body would tell you !!