My friend did my brake pads and he said there are calipers sticking to the roter. However, i was running on aftermarket brake pads previoiusly and they might not have fitted well, and they were very low as well. But my friend said it might be fine to drive now since it's not too warped.
As for the leaking problem, most of my friends told me to not worry about it since it is a very small leak, and that to replace it at this time would cost too much. So i guess i'm back on track to start saving money againfor my other upgrades. But thanks for the heads up.