Holy moof, I really need to update my journal

Ok! So a few weeks ago, I was in the bathtub and I heard this noise coming from outside. I couldn't get up and check it out because a) well, I wasn't exactly wearing anything and b) it was 10:00 at night. The sound was like a high whistle, occasionally changing pitch. It was like it was being blown on and off...a little similar to Morse Code. It was a really eerie noise, but I let it go. But about a week later, the exact same thing happened...I was in the bathtub and I heard that eerie whistling noise. It's really starting to freak me out here. That's the last time (so far) I've heard the whistle, but a few days ago, I was once again in the bathtub when I heard some sort of clicking sound. But this time it wasn't coming from outside...it was coming from inside the tub. And I mean inside-inside...as in, right behind the wall.

So yeah. I'm hearing creepy noises in the bathtub. Anyone have any idea of what's going on??