Good evening girls. We need advice from a doctor. He advised us to use…

Good evening girls. We need advice from a doctor. He advised us to use NEOSTIJEN mixture to gain weight. We weigh 9 kg and we've been 8 kg for 9 days. We drink Nutrilion lactose-free, it was prescribed to us to gain weight. We think we may have gained some weight, but I don't know for sure. We were 8 kg at 7 months pregnant. Maybe we have lactose intolerance because there is one + on the test. Because of this, they said we should drink lactose-free. We drank just Nutrilion before.