Abortion and guidance for next pregnancy

Patient: I am 30 years old married women. My first pregnancy(twin girl babies) got aborted at 5th month due to bleeding. 3 days before the abortion i had scanning and there was no problem in that. Now how many months after we can try for the next pregnancy. i would like to conceive with twin babies again Whether there is any chance for it? what all precaution i have to take for next pregnancy? While consulting a doctor she told to take stitches for next pregnancy.Is it really necessary ? whether i can go for job during the next pregnancy.

Symptoms: Bleeding

Doctor: