How long does it take for evening primrose oil to work taking 2,000 mg by mouth

I am 37 1/2 weeks the baby is so big she causes my legs to go numb hard pains thru my legs
Best answer:
not sure about the primrose but I do know from experience that sex works wonders! (I went into labor with my son about 6 hours after sex, did not really enjoy the sex seing as how I could not move but it worked!)
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