baby recognizes daddy means trouble

I am 18+6 and i have been having the worse morning sickness and stomach pains. It seems the only time there is no movement is when my boyfriend is around. I think the baby recognizes his voice and knows he means business and doesnt wanna act up when hes around. As soon as i get to my own house or get in the car to drive away from him thats when the pain is soo intense. When hes with me no movement. This baby is so silly lol