While mild nausea and acidity can be side effects of Meganeuron Forte or typical pregnancy symptoms, a lack of fetal movement is not a side effect of this medication and is a critical warning sign. By the fifth month (around 20 weeks), monitoring baby movements is highly important. You must contact your obstetrician or visit the nearest emergency room immediately for a fetal heart rate check and ultrasound to ensure your baby is safe. Do not take any more injections until you have been evaluated by your doctor.