85RX-Seven

I have a question. My clutch pedel has been acting up latley. It will not be sticky when i turn on the car. I have to pump it 15 to 20 times to get it sticky again. I have to fill up the clutch fluid res. every 4-6 days and sometimes my clutch pedel wont even be sticky at all it will just flat out go to the floor and stay there. This makes it hard to drive back and forth to work and i would really like to hear what every one has to say. I think it is the pump because it is the orig. part and the fact that i have to reaplace the fluid so often. please tell me your diagnosis. Thanks guy & gals