Dr. Appointment 😬

So yesterday I had my second appointment and I’m currently 16+1 with a baby girl we had just gone over some blood work that I got from 12 weeks. Before we called to see if the blood work was in for the gender reveal and they gave my tia the gender and i asked about the blood work also and they said everything looked normal. So couple weeks go by and now we’re at this second appointment and we go over the blood work and had told me they found something fibrosis he does have an accent and I couldn’t understand him well. Anyways he had said it’s common in pregnancy and that I shouldn’t worry about it and he gave me another appointment for 20 weeks for an ultrasound and to take blood out of husband to see which side the baby is getting it from. I looked up the diagnosis and it gave me a lot of stuff. So I’m not sure if I should worry or if she’s just behind on something. What do y’all think?