Acoustic Guitar Rattle Noise

My guitar is acting weird.?

I got my guitar maybe, 3 months ago, a Yamaha acoustic guitar. In the first few days, the guitar was rattling and I thought that would be normal, but it continued for a really long time. My guitar strings were getting rusty so I changed them and the ratting noises got worse. It’s been a few days since I’ve changed the strings. The first few frets have a very big ratting noise. Whenever I hold down the 2nd fret of the 3rd string, it plays the 3rd fret of the third string. Is there any way I can fix this problem? Help.

Sounds like either the neck is warped or the action is too low. If you accidentally changed to a heavier gauge of string, which is quite possible if this is the first time you ever changed the strings, it may have warped the neck, because heavier strings place an increased strain on the neck. Get it to a guitar shop asap and have them look at it.

while my guitar gently weeps jake shimabukuro version