My 17 month old son Damien started screaming when we put him in the bath tub this past week. It's happened 4 times now, he screams as if he's terrified to even be in there. Up until last week, I had to force him to get out of the bath. I read an article that said at about 1.5 yrs old, they can develop a fear or phobia of going down the drain? Is that true? Anyone have experience with this? Sonja never did this, and she's 4. Help!