Well loose lugs will make a noise while your driving but usualy dosen't stop when the brakes are applied. I assume the noise is coming from the right front. If you take it apart and find nothing wrong when you put it back put some pad glue on the pads before assembly. that may be all it needs????? You can get it at most parts stores. it goes between the pads and the caliper.
If your unsure how to use it ask them when you buy it.