My guitar (in its case) fell from the top shelf and hit the ground. The 5th string broke, which I changed out. It feels taunt and sounds okay. While testing out the other strings, I found out the 2nd string is very loose. I turned the tuning peg, but the string was still very loose. I kept on turning until the bridge pin popped out. I put it back in and did it again and the same thing happened again.
My question: Is the string broken somehow? Or is there something else wrong? Or should I just change out the string to save the headache?