Hello everyone! Such a situation. I had an ultrasound today, 19 weeks …

Hello everyone! Such a situation. I had an ultrasound today, 19 weeks along. They said that the baby is slightly behind schedule. In some places development (hands, legs, head and so on) corresponds to the term, but in others it doesn't. They said that the reason could be a lack of vitamins, but we still need to go for a screening for a full examination. At the beginning of pregnancy there was placental detachment and uterine tone. We were put on bed rest. Does anyone know what to do? Maybe someone has experienced this. Overall they said everything is great and there is nothing serious. I'm worried??????