Hi Yasmeen, Welcome to HealthcareMagic Forum.
Kindly don't worry about the Dexamethasone
Injections as they will not be harmful to you or your Baby. It would have been better if you had told me, what your Doctor has reported to you regarding your Baby's lung maturity. Since you are nearing your Due date, you doctor wants to speed up your baby's lung maturity if it has not developed upto the mark till date according to recent scan. If you deliver a baby without lungs being matured, your baby may land up in NICU. So, don't panic, dexamethasone will speed up the lung growth before your due date, so that you deliver a healthy baby. Just take it as directed by your Doctor and go for regular follow up.
I Wish you All the Very Best and Good Luck, Take Care.