Can being emotional cause you to get sick when pregnant?

Ok so weird, but whenever I have a cry over something (which is often since I'm almost in the 2nd tri) my tummy gets really sensitive and I feel like I'm gonna get sick! Matter of fact, I have actually thrown up (just a little) once or twice already... They're not full blown cries but definitely more than a sniffle lol Any tips or anyone else have this?