How to have Sex😥😥

I ve been married since 3 years and i havent had sex. My husband loves me so much, but its just that i get scared to imagine something getting inside me. We have tried a lot, used lubes, too. But i get so panicky, scared, little sweaty and shout. It pains for me down there when my husband is trying to get in. I dont know what to do. My gynac gave me the vaginamus, but that's something i need to put in and make that comfy n used to me so that i get mentally n physically prepared to do it properly. I have no idea how to get turned on with those fake dicks! Please help a sister out and give me some suggestions.