Genetic Counseling

Sara • Hello I have been with my husband for 10 years and we have 2 kids together and I`m hoping for one more. I`ve been trying for the last 6 years and nothing so I`m hoping we can get one soon.
I'm 33 pregnant with my 5th child and 24 wks along. I have had healthy pregnancies and babies every time. I've been Asked to come in for genetic testing. Please tell me what that is for, I'm kind of worried.