Welcome to HCM,
I can understand your concern about the medicines she has been prescribed.
These drugs are useful in early pregnancy,in case of PCOD ( Poly cystic Ovarian Disease) or presence of insulin resistance
, Overweight that is metabolic syndroime.
Metformin improves insulin sensitivity. Please take care of diet,usually this will not cause low blood sugar
Role of Folvite in early pregnancy is to prevent Neural Tube Defect
Asprin low dose is given to prevent Gestational Hypertension
and Pre Eclampsia.
All these drugs improve outcome of pregnancy.
I hope this information will help to understand and you can always ask your treating Gynecologist.