Does it work?

So I’m currently 38 weeks and 6 days pregnant and i was told using primrose oil will really help my soften my cervix, maybe dilate a little and just most likely send me to labor (not proven i know so im not expecting it) but lately i have been trying it for 3 nights straight just inserting 5 poked holes in my vagina and i drank orally 2 and last night i had some cramping and stuff . What do you guys think will it help soften my cervix enough maybe open it a little ? I haven’t dilating a thing and my doctor tried doing a membrane sweep but my cervix is closed