I get these strange foot cramps?

I used to just get them in bed if I pointed my toes for too long, and they would go away when I stood up and only if I stood up. Now I get them when I do things like sit on the floor or ride my bike. It feels like a really painful cramp in my foot near my toes. Now they dont go away when I stand up, and I noticed that it looks like one of my toes is bending in an unnatural direction when I get a cramp, its like it was pulled out of its socket and either pushed towards the other toes, or pulled away from the other toes. It happens to my big toe and sometimes one of the smaller ones. Its scary because when its cramping it wont go away and i cant move the toe that's cramped up at all. Is this normal? Probably not haha but do you know what it is and why its happening?