Hi There... I Am A 50 Year Old Female In

Hi there... I am a 50 year old female in decent health but over the past year have had very sore feet especially in the ball of my feet. They hurt more when after a long day and or wearing flat sandals. This started hurting gradually and is considerably worse now. When I get up in morning I almost feel crippled until up for a while. I am not diabetic. Not sure what is going on. My right foot usually hurts worse than the left.