Evening primrose oil

I’m 38 weeks and just took my first evening primrose oil orally a couple hours ago and already feel stuff happening.

The capsules are 1000mg and I was wondering how much I should take a day orally and/or vaginally.

I’m taking them because cervix is shut tight and it’s my first and baby hasn’t even engaged yet so I’m hoping they will help get things going as well as with labour and delivery.