VCF with Nuvaring

So if I double up with my Nuvaring and the film would that be safer if he cums in me? I let him with my IUD and never had a pregnancy scare but now that I’m in the ring. I’m a little worried because it’s not as effective. So I’ve seen the contraceptive film and I wonder if it worked? Anyone on Nuvaring let there bf cum in them and have been protected?