The woman, known only as Macy, photographed the syringes and medication involved in her one successful round of IVF.
"It only took four years, three miscarriages, depression, 107 hormone injections, one surgery, two procedures, over 100 suppositories, and several thousand dollars to get our baby," Macy wrote on her blog Martinis and Medicine.
Macy said she wanted to share her "infertility pregnancy announcement" as an alternative to the usual way couples share the news they're expecting.
In a heartfelt blog post, titled 'A Work of A.R.T. | Our Rainbow Baby', Macy spoke about the pain and tears she experienced over four years of trying to conceive.
She said she hopes to inspire other women who are struggling with infertility to keep trying.
"What our baby does do is fill us with a love and joy and gratefulness that I never knew possible," she wrote.
"When I look at that ultrasound my heart actually skips. For years I lived never knowing if I would ever have an ultrasound photo hanging on my fridge.
"I'm so in love I can hardly stand it."
Calling the pregnancy news "bittersweet", Macy also reflected on the babies she has lost, adding: "To every single one of my babies, you were worth it."
Since the announcement, Macy has been documenting her pregnancy journey on Instagram, including her first baby purchases and bump progress.
Macy has been blogging her thoughts about her fertility journey since 2014 and has covered unsuccessful IVF attempts and miscarriage.
You can read more about her experiences on her blog Martinis & Medicine.