Hello to fellow Prolia users out there. A month ago I had a Prolia injection. It has a long half life which. with regard to this drug, means after a month 50% of it is still in one's body. Friday evening before going to bed I started feeling tension/minor pressure in the center of my chest. I went to bed but had a hard time sleeping because it continued. Saturday morning I got up and ran some errands and the mostly present, though at times intermittent discomfort, continued. Last time I had this issue and went to a walk-in clinic I was told to go to the ER. (Instead I went to a friend's house (she is a nurse) who has a 12 lead "thingy" and had her do an EKG.) This time, as it was a Saturday and my doctor's office was closed, I went to the ER. (I won't complain about how long I had to wait-will just be grateful I have insurance that will cover the charges.) I had every test there is, including a treadmill test, only to be told, "It's not your heart." After returning home I googled if Prolia can cause chest pain. The answer is "yes." Just wondering if anyone else has had this apparent side effect.