Steroids and joint pain.

So I'm 29+6 at my last appointment they did a fetal fibronectin test which came back positive. So as a precaution I have steroid injections for two days to help with their lung development. Even since my joints (knees, wrists, elbows) have been weak and I keep having pain. Anyone else. Do the steroids have anything to do with that. Or is the joint issues just more pregnancy hilarity.