I have a 16 month old Simmental heifer I raised that I have never seen in heat. I gave her 6 cc of Lutalyse a month ago put a patch on her and she never came in. I gave her another 6 cc Lutalyse 12 days ago put another patch on her and moved her in with a different group and she still hasn`t came in. I`m starting to think she may just be a non breeder but she wasn`t a twin. What would you do next ? Give her another shot , take her to the vet and let him check her or just say forget it and ship her ?She`s a Pays to Believe X Grandmaster out of a very fertile cow family and looks really nice but If she won't breed it really doesn`t matter what her pedigree is. I have never had this happen till now.