Hello, With such presentations in my clinic, I would like to know about the main cause accountable for her miscarriage, so I may suggest some investigations to confirm it like fasting blood sugar, TSH, CBC, HCG, and an ultrasound. A detailed clinical examination is needed for uterus and cervix problems. If your problem is threatened miscarriage then I recommend few things may help in your case: a) Do take rest if you feel pain b) Try to avoid sex and exercise during this time c) Try to avoid travelling d) Try to avoid smoking and drinking So, prevention of pregnancy loss depends upon pathological causes only if that is removed then she can carry baby for full term without any problem. Regarding medications which she has been prescribed by her treating doctor has no side effects at all but it is not logical to take it without any scientific ground so I recommend go to root cause and do necessary investigations as soon as possible and correct it. Hope that helps. Please let me know if you have further questions before meeting your primary care doctor. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Uday Nath Sahoo