I feel the same way. I work full time as a freight manager and boxes fell on my stomach the other day. I was so worried, but when I went to the doctors on Thursday and heard the heart beat I was just fine
Get one of those home heartbeat Doppler things where you can listen to the babies heart at home maybe that would help :)
I'm the same way. Then when she started moving I would stress if I didn't feel her for an hour or two! Hitting 24 weeks and knowing that if something happened the doctors would try to save her helped alot. 28 weeks today