Evening PrimRose oil

Hi mga moms over there ,,,ask ko lang po effective po ba tong primrose for open cervix kc sabi ng midwife 1 cm pa daw at need ko daw uminom ni2 for every 8 hrs...medyo mahal cya 30 pesos kada isa .... at pede ba na uminom muna ni2 kada isa capsule a day lang ... prang natatakot kasi ako uminom nito for 8 hrs... Im 36 weeks preggy po...pki sagot nman po pls...tnx. 😊