At this age, your child may wake up at night, it is normal and very common. Do not freak out or think that something is wrong with your child.
What you need to know:
Like any other bad habit, waking up at night can be broken with time and patience. After months of sleeping through the night in your child’s own crib or bed, your child now wakes up once, twice and cries until you lull him back to sleep. If your child has started waking up and crying, there might be a good developmental reason for it. Your child might be overwhelmed by a new sibling, by potty learning or by his new bed. Or it can be because he is feeling too hot or too cold, has nightmares, is afraid of the dark, or is sick.