Me no stress too. My IL seems pretty alrite with wateva the gender of their first grandchild, as long as healthy can already. But I think my FIL does prefer gals more. Tat's y he's a bit bias towards my HB's sister. My HB is the first son, out of 3 siblings, the 2nd is gal and 3rd is boy.
For my parents, they were hoping its a boy, coz my side of the family too many gals already. My family is 3 gals, Im in the middle. My elder sis also gave birth to a gal.