Hello all moms! Today we did an ultrasound of the baby, he's one and a…

Hello all moms! Today we did an ultrasound of the baby, he's one and a half months old. We found a cyst of 1.9 mm. The sonographer said that it's not scary, it will pass on its own. We have an appointment with a neurologist next week. I wanted to ask, has anyone had something like this? Did it go away on its own or were medications prescribed?