Ovulating again?

talisa • 26. Business owner 💎. Married👰🏾. Mommy to one beautiful 5.5 y/o little girl 💕 #2 due 6/2016 👶🏾
I had a chemical and got a positive ovulation test the day after AF ended. I tested the day after I got the positive, and it was negative. All of these test were within 3 mins. 
  tested again today and it's getting darker again. It's possible to ovulate again after one, correct?