Daughter has stomach bug has throwing up for 12 hours and now has stopped. is there a chance me and my husband wont get it? also have a 1 year old im worried about. how can we prevent it?

The best you can do is careful hygiene, especially after being in contact with your daughter. The most common "stomach bug" is norovirus, which is extremely infectious: just being in the same room when an infected person vomits can transmit the virus. Fortunately, these viruses rarely are dangerous, even for babies, even though uncomfortable for a few days. Good luck.