Contractions could start few days before labour becomes established but it is safe to go to the hospital.
A scan could be done to check the baby's welfare and you will be examined too.

All the best!

Thanks @Ayodeji I will that first thing tomorrow morning

@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.