hello user , i understand your concern and it is a legit one - cannabis exposure very early in life may negatively affect brain development- studies have shown that some babies born to women who used marijuana during their pregnancies respond differently to visual stimuli, tremble more, and have a high-pitched cry, which could indicate problems with neurological development. children prenatally exposed to marijuana are also more likely to show gaps in problem-solving skills, memory, and the ability to remain attentive. so better consult with your gynecologist and some deaddiction specialist regarding further management and she be asked to stay away from marijuana and even simple "smoking" which carries its own hazards like preterm birth, sponaneous abortion , growth retardation etc. hope i answered your query - if satisfied please rate the answer - any followup queries are welcome