Advice!!

Since about my second Trimester my 3 year old son has been a completely different person!
He used to love me and hug me and actually listen to what I told him to do. But now he is like a little monster with me. He screams he throws himself on the floor he kicks and it’s only with me!! He respects his dad but I end up crying sometimes because I feel like he hates me!
Is anyone else toddler acting up?