Pregomega prenatal vitamins are generally safe for use during pregnancy. However, like any medication or supplement, they can have potential side effects. In terms of weight gain, some women may experience slight increases due to water retention or changes in appetite. It's important to maintain a healthy diet and exercise routine to manage weight effectively. As for blood pressure, Pregomega vitamins do not typically cause significant changes. However, if you have pre-existing hypertension or other cardiovascular conditions, it's crucial to consult with your healthcare provider before starting any new supplement regimen. Other possible side effects may include nausea, constipation, or allergic reactions. If you experience severe symptoms or concerns while taking Pregomega prenatal vitamins, it is recommended to seek medical advice promptly. Remember that every individual's response to medication can vary; therefore, it's essential to discuss any specific concerns with your healthcare provider for personalized guidance and monitoring throughout your pregnancy journey.