I'm new to 'DIY-ing' and this evening I mounted a wooden wine rack to my wall. I used a stud finder, made my marks and when I drilled the hole on the left hand side it felt like.. nothing.. no stud. I shifted the drilled a little to the left and tried again, still nothing. I tried once more, shifted the drill a little more left and I got the stud. No issues with the stud on the right hand side. Hung the wine rack and it looks perfect. Pretty sturdy too.
A couple hours later a 'bubble' appeared.. Its weird, it looks like a bubble from when water is trapped behind paint but when I touched it, it was hard, almost like the drywall raised, but only in that one area on the left hand side.
Does anyone know what this could be? All help is greatly appreciated.