My son is clingy ? I don't know if it's normal or if he feels like the…

My son is clingy ? I don't know if it's normal or if he feels like there's still a little one in my belly. He constantly wants on my lap, cries when he sees me, crawls towards me with tears and won't calm down until I pick him up. It doesn't go well with my husband and parents if I'm nearby. When playing, he forgets about me, I hide in the room and play normally with everyone. As soon as he sees me again - an outburst. Has this happened to you at our age?