Snowbarry triples

After Barry and Iris get married Caitlin throws herself into her work, deciding to make something that will make Barry drunk. After testing it she wakes up next to Barry, she panics and runs out. But a month later she starts having morning sickness, after a week of hiding her morning sickness she gets a call telling her that her sister in law died leaving her custody of her niece Dawn. How will she handle it?