Early maternity leave?

Anabel
I'm 33w5d, this week I had to have to nst test done. Turns out at both I was contracting with no pain but I was given terbutaline to stop contractions. I have been working full time until I hit 30 weeks and now reduced to 20 hours a week. I work in retail so my entire shift is on my feet. I have an appointment with my doctor on Monday, do you ladies think I'll have to go on early maternity leave? Did this happen to anyone else?