"The best things in life happen unexpectedly," Krystal captioned the four-minute video.
"The best stories began with, 'And then all of the sudden.' The best adventures are never planned. Free yourself from expectations. The best will come when you least expect it."
Krystal filmed herself waiting for the results of her home pregnancy test on August 9, and she said getting a positive result would be "f-cking bananas."
"If I saw a 'no,' I would be relieved and I'd be like, 'Okay, not yet. I've still got time and I might go make myself a skinny margarita,' to be honest. And if it's a 'yes,' I'm going to freak out," Krystal admitted.
She added, "Oh my God, my whole life would change," as she patiently waited another 30 seconds.
"I'm so scared," she noted.
Krystal then looked at the test and learned she's pregnant!
Krystal broke down into tears and kept repeating, "Oh my God," adding, "I have a baby inside me."
Krystal said everything had lined up for her and so her feelings of fear were starting to dissipate.
"I just feel excited for how it's all going to happen," Krystal gushed when laying in bed next to her boyfriend.
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Krystal later showed off little baby bump at 17 weeks in the video and teased she'd be doing a photo shoot soon to accompany their future pregnancy announcement.
"I'm just honestly ready. So ready," Krystal said.
Krystal and Miles had a beautiful photo shoot at the beach and she said, "I can't wait to fill my heart with so much love and creating little pieces of me into this world and teaching them about love and teaching them the love I never had."
Krystal and Miles, whose baby is due in April 2021, just went Instagram official with their relationship in October.
Krystal and The Bachelorette alum Chris Randone announced their mutual and amicable decision to split and separate on February 15, just eight months after the pair got married.
The former couple released the following statement at the time: "It hurts to announce that at this moment, we have mutually decided to separate. Never did we imagine this scenario, but we've come to a point where we both need to work on ourselves... We just ask that you please respect our privacy as we navigate through this."
"The past 8 months have not been easy...I've been torn between mourning a life that could've been...and determined to fight for the future that I know I deserve," Krystal wrote on Instagram, along with a photo of herself and her two dogs.
"With respect and support for one another, Chris and I have decided to move forward with filing for divorce."
She added, "We are grateful for the events that brought us to find one another, as we have been great teachers on our journey of personal discovery and growth. I believe that there can be beauty inside of pain when we have the courage to look within with compassion and a willingness to grow."
"We all deserve to live a beautiful life we love...and sometimes we realize it's time to let go and LET GOD," Krystal continued. "Thank you for the well wishes and continued support. It means the world."
Chris revealed to Us in August that Krystal had sent him divorce papers when he was hoping for reconciliation several months into their separation and she had "moved on."
Chris and Krystal reportedly exchanged vows in an intimate ceremony officiated by The Bachelor franchise host Chris Harrison at the Vidanta Hotel, and their wedding aired on Bachelor in Paradise's sixth season in Summer 2019.
A source told People earlier this year that Krystal, a fitness coach, and Chris, a sales trainer, had been struggling for a while, even dating back to before their televised nuptials.
And Chris confirmed to Us in August that the split wasn't sudden or a surprise to him.
"There were definitely moments where there were either warning signs or there were just mixed signals," Chris noted.
Chris explained it was difficult for him to jump into another relationship after appearing on Becca Kufrin's season of The Bachelorette without having time to process everything.
Chris also said he endured a lot of "scrutiny" while Bachelor in Paradise's fifth season was airing because he came across like a villain on Becca's season and got off to a rough start in Paradise.
"I couldn't process it or focus on that or just be able to address it because I had a relationship [and] I was engaged and then that turned into a marriage," Chris explained, adding that being in the public eye contributed to his breakup with Krystal as well.
"And the entire time I abandoned myself, which I think led to just some issues within me as well."
Chris, however, said at the time he was almost ready to begin dating again and make new connections with women.
People previously reported that Chris and Krystal's personalities didn't mesh at all and they weren't on the same page about what they want out of life.
The couple reportedly wasn't ready to get married but felt "immense pressure" to give Bachelor Nation the happy ending they had been waiting for.
Krystal and Chris' breakup came as a shock to fans because Chris had told Us in August 2019 that Krystal had decided to stop using birth control and they wanted to start trying for a family in early 2020.