Should I Use a Cane for My Collapsing Leg?

So I’ve been having trouble with my left leg collapsing. I told my primary, he didn’t really do or say much regarding the issue as he was there to see me about another issue going on. Given the fact he didn’t say anything, and I’m well enough to walk around without a walking cane on a good day, is it a bad idea to use a cane to try and prevent further falls and to use to relieve back pain when standing in really long queues for about thirty minutes? I feel like I’m effectively a fraud when thinking about using a cane, because I’m not sure if I truly need a cane if I’m only falling about once a week spontaneously (though it used to be a lot less frequent). The past few falls have caused significant pain flare ups in my left hip and leg as well.