Am I normal?

Amber • My names Amber I'm 28yrs old. I'm a full time nursing student and have been with my fiancé for 13yrs. Due 5/4/16
I'm 21 weeks and I feel like I'm losing my mind :( all the sudden my mood swings are intense! I've gotten in 2 big fuck you fights w my fiancé this week, I just tried to go shopping had an anxiety attack, and now I'm crying. I feel so shitty today 😢