I'm Filipina and my husband is Punjabi. A lot of couples trying to conceive spend a lot of energy timing sex, with mathematical precision, to calculate when a woman is prime for ovulation. I am also currently pregnant obviously. If you are over 35 or have other known risk factors, your doctor may also suggest a fetal DNA test sold commercially as MaterniT21 or Harmony during the first trimester; it has a 99 percent accuracy rate because it works by sequencing the small pieces of your baby's DNA that circulates in your bloodstream during pregnancy. Not something you have to tackle now, but certainly something that will very likely come up in the future. I'm sorry if I come across as intense. I wouldn't lose sleep over it.
We have surrounded ourself with positive people. I think your baby will be fine. I have 2 biracial kids and this will be my third. Your baby will be fine! But while timing your lovemaking exclusively to those few days makes logical sense, it also has some drawbacks -- primarily because your body doesn't always behave with clockwork regularity. It's actually possible to become pregnant immediately after going off the pill -- as soon as the pill's hormones are out of your system -- although it may take a few months before ovulation begins normally again.