Anyone had Dexamethasone The painful injection on thigh

It's a steroid injection to mature baby's lungs. I took it twice. First, 13 yrs ago when I was admitted at 34 weeks. Gave birth at 36 weeks. Second, 4 mths ago. Gave birth at 35+6 weeks due to an infection because I had a premature rupture of my waterbag.

I got it today. Two dosages 12mg each. Administrated on my arms. Was little painful. Had the second two hours back and it’s still a little painful. 36 now delivering in 37

I had it in wk 30 and gave birth wk 33… I’m sure it helps cos it helps to mature baby’s lungs