Varicose veins on l leg with vein valve in groin not functioning. ran into something now bruise on thigh with throbbing pain down whole leg. worry?

Not to worry.: The malfunctioning valve probably has no relationship to the bruise and throbbing in your leg. The bruise is secondary to injuring the area and having some localized bleeding. This would also explain the throbbing. Heat to the area and tylenol (acetaminophen) should help. Malfunctioning (refluxing) valves can lead to venous insufficiency. You should see a vein specialist.

Ultra sound of leg: With ultra sound of the leg to r/o dvt, then the rest have to be treated sympyomatically.

Compression socks: Wearing compression stockings can help until you can get your varicose veins dealt with. You also want to avoid superficial thrombophlebitis, a painful clot of the varicose vein. See a vein specialist.