Normal post operative bleeding lasts from several days to several weeks after surgery. After the first couple of days the bleeding turns into spotting, usually dark red but sometimes bright red. Then in most instances, the bleeding stops for good. Sometimes there may be a burst of bleeding at about 2-3 weeks if there was a collection of blood clot in the pelvis from right after the surgery. And occasionally at about 2 - 8 weeks after surgery, there may be some bright red vaginal spotting due to suture dissolving.
Everyone has heard the advice, Drink eight 8-ounce glasses of water a day.. That's about 1.9 liters, which isn't that different from the Institute of Medicine recommendations. Although the 8 by 8 rule isn't supported by hard evidence, it remains popular because it's easy to remember.
The rule of thumb is take your body weight, divide it by 2 (cut it in half), and that's how many ounces of water you should be drinking every day -- if you're active, you need to drink more. In your case, you need to drink about 92 ounces of water every day. That's a little more than 5 16-ounce glasses of water.