Ticking time bomb

Ever since i became pregnant I’m literally a ticking time bomb. I scream and yell at everyone in my path, and i have no control over it. It’s come to the point where I’m scared to have this baby because i don’t want to scare him if it doesn’t go away. I don’t want him to see me scream and yell at people. I feel like a monster and all i ever do is have an attitude or cry. Please if anyone has any ideas of how to stop this or anything please help, I’ve tried everything and I’m mortified of myself