Hitting

My son has started hitting me. He won’t do it with my husband. If I tell him not to hit & be gentle he just goes to hit me again. As soon as my husband says literally the same thing he comes running over & gives me a hug. Just the way our dynamic is with work schedules, I do take care of more of my sons day to day needs. I’m pregnant. My son is in daycare 4 days a week & with my mom 1 day while we work. I dunno what is going on but would love to hear if anyone else is dealing with this & what your doing!