feeling lost

i just started dating this girl a month ago and weve been having fun but she keeps calling me daddy and it feels weird i dont know why but its like im not sure if i want to be the dom or play the little in dd/lg scenes. shes super into it but idk if i can handle being in charge of her. it just seems so heavy. sometimes i wonder if this is a phase for me or if im actually ready for something longterm like this. anyone else ever feel this way? what do you think? i need some advice.