I'm 34 years old. I've been running for 22 years. In that time, there's been two occasions where I've had bone problems. During both of those times I've been taking a progestin only contraceptive.
I want to share this with you not to spread fear but just to make you aware and prevent you from being in the same situation as me.
As someone that trains hard to maintain or improve their fitness and performance, injury is pretty much my worst nightmare. Nobody trains hard to have it all thrown away.