Petrified of monsters

Over the past week, my 3.5 year old has had a panic attack, separation anxiety and been sick with mucous junk. His emotions have been all over the place but was the absolute worst. THREE HOURS OF DELAYING BEDTIME. Saying he’s scared. We have 2 nightlights in his room, his normal stuffed animals and blanket. I’ve reassured him til I’m blue in the face. We offered to leave the door open but nothing would do. The second me or my husband stepped toward the door he went into a full blown hyperventilating screaming fit. Saying he was scared and don’t leave. I’ve lost my mind trying to pinpoint what’s sparked this. I had to end up laying on the floor next to his bed for him to fall asleep. I am not going to make that a habit.

The pediatrician recommended therapy and I’m so glad. She said sometimes they just need extra help. I’m waiting for a call back to make an appt.

Has anyone successfully survived this stage? Cause I’m doubting I will especially with being sleep deprived because of my sick 8 month old.