Double penetration

Lynn • Been ttc since October 2014. Been hard to have sex on days suppose to with s.o. a trucker.
My lover mentioned today he wanted to try double penetration with me sometime soon. He said to start he wouldn't put his cock in my ass but just his fingers and toys while he is inside my pussy with his cock. I'm not sure how I feel about anything in my asshole. Afraid I ll lose him if I don't at least give it a try.