Evening primrose oil?!

What are your thoughts on EPO?! I brought some today after my doctor told me it might help soften the cervix, but I was reading articles about it not being safe. Now I'm sad, and don't wanna try it. I'm also freaked out about inserting it into my vag 😳lol I get infections very easily down there so it all just sounds scary.  
Did anyone see a difference between taking it by mouth or inserting it?! 
I'd love some comments about your experience with EPO! BTW I'm 39 weeks for anyone who is worried it's to early.