Quit birth control now having nightmares?

I stopped birth control 2 weeks ago tomorrow. I am also on cymbalta that I have been taking for about 3-4 months. I had been on the same birth control since June 2017 and when they switched the manufacturer I had a bad reaction and decided to stop taking it. Since then I’ve been having super graphic nightmares and headaches. Has anyone else had this? I know it’s not the cymbalta alone because I’ve been on it too long to start having this kind of side effect now