Friendly help please

So I’m getting married this coming saturday. I have IC and trace markers for endometriosis. Sex has been extremely painful for the past year and it’s been practically non existent. I want to make our honeymoon great as well as our wedding night. I want to have sex and so does he but it just hurts me so bad to where I get swollen and bleed. Does anyone experience this or have any tips that may help. I just don’t know what to do anymore and being young (21) and newly weds with no sex life hurts and is hard...