It is generally safe to consume one glass of mango shake daily during the second and third trimester of pregnancy, as long as you do not have any allergies or medical conditions that may be affected by mangoes. Mangoes are a good source of vitamins A and C, fiber, and potassium, which can benefit both you and your baby. However, it is important to consume them in moderation and ensure that they are ripe and properly washed before consumption. Additionally, if you have gestational diabetes or any other concerns related to your pregnancy, it is best to consult with your healthcare provider before adding mango shakes or any new food item to your diet. They will be able to provide personalized advice based on your specific situation.