How To Treat Swelling Of Left Hand Due To Intravenous Therapy Post Childbirth?

I was delivered of a baby 7 days ago, throug CS. After I was removed from the theatre, the nurses administered intravenous rehydration therapy on my left hand for some days. Now, the intravenous therapy has been discontinued but the hand swells now very massively with uncontrollable pains leaving me sleepless. Initially, the doctors said the swelling and the pains would go on their own, but it s getting worse and critical. What do I do now please?-Abigail Williams