How do i tell my husband

Ive just out im pregnant with baby 3 it was a complete shock as im on the depo injection and ive never missed one i know nothing is 100% but im so shocked i only took thr test because of how i was feeling and im scared he is gunna suggest an abortion as we was both happy with 2 children im happy that for some reason we have been given this gift but so nervous can anyone give me some advice or has this happened to anyone before