She wouldn't sleep at all last night or today. She's begging for food every two hours (which is weird for her, she was usually every 3-4) I feed her and then she starts screaming afterwards. I change her diaper, make sure she's warm, I try rocking her, holding her, putting her on her stomach, she refuses the pacifier. Nothing is working. I'm so tired, someone help. Why won't she stop screaming.