Morning sickness or actually sickness ?

I'm ten weeks today, with my second pregnancy! I felt sick with my first one but never got sick. This time round I've definaltly felt a bit sicker!! And today, I was in town all day, I was walking around for hours and since I've come home I can't stop throwing up! I can't even drink a glass of water. I really don't know if this is because of morning sickness , or down to the slice of quiche I ate in the city?! I feel ok, as in no temperature or anything , or no achy feeling just sick sick sick!! Any sight or smell of food n I'm gone ! Is it morning sickness or what I ate ?