Hi mama, usually ang first IE ay around 37-38 weeks na, pero it really depends sa OB mo and kung may specific concerns pa, kaya if you're curious, okay lang mag-ask directly sa next visit mo kung kailan niya pa plano gawin, lalo na kung may frequent contractions ka na ngayon! One of my mum friends said her OB did the IE earlier kasi may show of signs na, so bawat pregnancy talaga is different, pero definitely okay to clarify with your doctor para sa peace of mind mo.