I've had two hip replacements, i still wobble a little, theres been times when i've fallen, is that why? and what can i do to prevent it?

Hip replacement : It would be good to know when you had those surgeries done. Not sure if you had physical therapy at any point which i supposed it happened at some level right after surgery. Healing process varies in different people especially if you suffer of other conditions. Maybe would be a good idea to pursue physical therapy but this has to be recommended after careful examination by your orthopedist.