Customer(Is that American Indian? It sounds pretty cool anyway)
Sorry to hear about your accident. If your doctor has told you that you can take the water pills as needed that should be fine. Depending on what they are, remember to watch you potassium intake (you may need more if you are taking lasix, for example).
Sometimes edema can be from sodium imbalance (too much) or from protein deficiency. I don't know your other conditions, but if you feel like you have been lacking in protein you may want to think about adding some to your diet.
Also you know compression stockings can be good for legs,
Try to keep them up above the level of your hear several times through out the day. Remember that this skin is more fragile, so take very good care not to injure it, because it might not heal very easy.
Sorry to hear about your accident. That sounds really scary. We need less cars.
Let me know if you have any thing else you can think of that needs clarification.