Lexiloo

So I get into my car early this morning and had a massive whine noise to it, had drove it earlier the day before no problems, I got it to my local parts store and bought some power steering fluid, put it in and after a while it got a little quiet but still there I look under the car and it's leaking somewhere under my a.c. pump my cars to low to get under it and really check it out anybody have some ideas of what it were it could be coming from? Please help lol amd the leak is a drip..drip..drip.. and really acts up when car is running