00xxxxxxx000. Her? will they both be ok?

Hello My sister is pregnant and is now in her 5th month.Recently she had operation where the cervix length had been reduce from 4 to 1.5 and the baby couldn't be hold still.So she the operation was done and she had few stitches to close it( pretty sure it was something like this,I don't know technical terms so sorry). Doctor gave some medicine and a injection which she need to take weekly once.The injection name was Anin 250mg or proluton,last week she had to take injection so she sent me for it.But the medic present there gave me amic acid saying Anin and amic acid are same.Which I found out yesterday when my mom said it was not the medicine doctor prescribed. Will it effect the baby or her??Will they both be ok??It was only one dose she had.Please help me. Thank you. It's was my fault and I'm feeling guilty about it and couldn't sleep all night