Ssdi denied, ssi still pending

I just went online today and saw that my ssdi was denied. I filled for ssdi and ssi on the exact same day. I figured my ssdi would be denied since I know that I don't have enough work credits. Yesterday the status on both said that a medical decision has been made and that someone may contact me. Now today the ssdi says denied but the ssi still says the same. What do you think this means?