Thanks for your query,
injection is given for fetal lung maturity in the cases where one suspects chances of preterm labour before 34 weeks. Besides lung maturity steroid
causes decrease in chances of necrotising enterocolitis and intra ventricular haemorrhage.The effects last for 7 days only. There are no siginficant side effect of this particular steroid. But there is no point in taking it in an other wise normal pregnancy
. Consult your doctor regardig the reason.May be there is some other reason.
Best of luck and take care..
Hope it helps..