Question about instincts

Does this happen with anyone else? How does it happen?

Anytime something is wrong with my son, I feel like I know it right away. For example, tonight, I went to bed, and I woke up two hours later and felt like I should check on my son. Sure enough, he’s burning up with a fever. I guess from the boosters yesterday.

Also, it seems like sleep is so much different since having kids. Lol I used to be a very very heavy sleep through alarms sleeper. And now I’m a pretty light sleeper.