Braxton Hicks?

💙Mia • Cajun & Proud, Conservative, wife to Royce 4.12.14 ❤️, mother to Bennett 8.12.15 💙
So this is my first pregnancy. I have no idea what contractions or Braxton hicks feel like. I'm 31w3d, and I'm just curious is this could be Braxton hicks or something else? 
Pain in my right ovary area. Kind of like a cramp but not menstrual ones. It all of a sudden hit me and almost brought me to my knees, lasted for about 20 seconds and went away.