Tell me I’m not alone

DD is about to turn 2 and I’m due in March with our 2nd. I’ve been nauseous so far the whole pregnancy and I feel like I’m not giving DD enough attention. She is also getting more and more stubborn by the day and refuses naps even though she’s definitely not ready to drop the nap. I feel like I’m failing her and I’m so scared of having another. How am I going to have a newborn and a toddler who still needs me so much?!