Hi girls, how are you? My question: I don't understand my mood. I thou…

Hi girls, how are you? My question: I don't understand my mood. I thought the toxicosis (pregnancy sickness) had eased and I was feeling better, but now my mood has come back. I don't understand myself. Sometimes I feel like crying, then laughing. I want to argue with my husband and also climb onto his back and ride him (like a horse)... Sometimes I feel sorry for my husband. When he comes home from work he immediately puts me on his back and carries me. Has anyone experienced anything like this?