It's New But Disconcerting If I'm Off Of My Feet

It's new but disconcerting if I'm off of my feet for more then a few mins my feet will lock up forcing my to hunch over in pain for about 30 seconds in till they loosen up. I'm 25 years old stay at home mom to a infant. I don't think it's from spending too much time on my feet like I did when I worked in the food industry it somehow feels different from the also my feet feel forced into a extension position with my toes pointed like a dancer