At 37 weeks, Contractions may feel like a tightening or cramping in your uterus, similar to menstrual cramps. Some women feel them in their back, as well. ... Some women confuse contractions with Braxton-Hicks contractions, which are sometimes referred to as “false labor.”

Are you trying to use Olive oil to induce labour?

@Bright29083, d tightening of d abdomen is called contraction, it could be mild cos it's just starting. U can go d hospital to check ur cervical dilatation and let ur midwife listen to ur fetal heart rate too.