After trying for three months before falling pregnant with her firstborn son, the professional golfer assumed it would be the same the second time round.
Instead, the couple tried for a second baby for two years, suffering three devastating miscarriages before finding out Lyng had a gene mutation that was affecting her chances of conceiving.
Then, right before her first IVF treatment Lyng discovered she was pregnant with her 'rainbow baby'.
A 'rainbow baby' is a baby born after a loss, so to celebrate their little miracle, Lyng posed for a jaw-dropping photo shoot, showing her cradling her bump in front of an amazing rainbow smoke-show!
"The maternity photos I took with Brayden [my firstborn] were good, but I felt this time needed to be WOW," she told mom.com.
"Because we had waited so long for her, prayed so long for her ... it needed to be stunning!
"This baby is already so loved. We cannot wait to meet you in 4 ishhhhhhh weeks," she gushed.
Instagram users went wild for the eye-catching photos and the message behind it.
"These are absolutely STUNNING," one woman declared. "You look gorgeous and the rainbow picture is so incredibly powerful; I love it! I understand and I couldn't be happier for you."
"This photo is unbelievable!" agreed another. "What a powerful photo with a special meaning."
Lyng said she thought it was important to talk about loss, especially as it's more common than people realise, urging people to remember 'there's always a rainbow after a storm.'