3rd pregnancy totally different!?

Ohr

has anyone had the first 2 pregnancies pretty much the same then the third totally different??? just wondering as my first 2 i puked and had nausea 24/7 had no constipation and was a lot less irittated. this time just a tiny bit of nausea when i dont eat....no puking of course and conatipated. so moody as well want to just explode at the smallest things!