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Sorry to see you're having all these problems so suddenly. At any rate, this gurgling is most likely from the heatercore, not good. If your waterpump is making noise, it should be checked out and replaced, as it may fail at any moment. Gurgling indicates either air, or combustion gases, in your cooling system. It may just be air. Air can be purged by letting the car idle with the resevoir cap off. As the car heats up, the air bubble should eventually be forced out. It may take a while to happen, but you'll lose some coolant when the air bubbles up, so be prepared for overflow and refilling at the resevoir. It's a good idea to run the heater full blast while doing this. To cover all bases, I would also get a combustion gas test on the cooling system, to rule out any headgasket issues. Gurgling modulated by acceleration, is also a symptom of a headgasket breach.
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