Unless the shrimp came from a questionable source the chances of the shrimp having anything to do with the vomit are slim to none. You're still in the morning sickness stage. Sounds completely normal.
Personally.... I would brush my teeth... Seriously, unless you think you have food poisoning and/or are vomiting excessively and worried about dehydration, etc. it just sounds like baby is not a fan of shrimp and you shouldn't eat it again for awhile.
Re: i ate shrimp and after that I started throwing up