@imitine Welcome to connect we arent Drs. but can help with what we have knowledge about . A rheumatologist has knowledge about the bones and muscles. A endocrinologist is knowledgeable about your hormones. Not saying they don,t cross over . I would say to talk to your Dr about your concerns about having Ca. and ask her which one is best for you . Does this help any? Others here will chime in of there information .