left leg numb?? then tingling and burning

So my left leg has been going numb and then tingling and burning sensation then it starts to hurt...I'm a hairdresser and I'm on my feet sometimes for 9-10 hours a day 4 days a week! I try to sit as much as I possibly can and if it gets bad I will tell my coworkers I need a break! I read online that it's normal and it happens to 25 percent of women! So they suggested using a maternity belt and I just bought it yesterday and it wasn't as bad but then I thought the weirdest thing ever happened to me today... I went for my prenatal and it was just numb the whole massage! Lik I couldn't even feel her fingers on the spot it was numb??? I just called the doctor waiting to find out what is going on and if I should get checked out!! Is this happening to anyone else ??? I'm 5 months and 2 weeks pregnant!