Had a 3sum

My husband and i decided to have a 3sum he been asking me and asking me for one. So we did. Biggest mistake ever, while we were doing it he ended up cumming inside of her and that hurt me that he didnt end with me.. Shes now calling saying shes pregnant and my husband wants nothing to do with the baby im upset about making a dumb choice and now i have to deal with what ever is going to happen.