Goro Recommended
Honestly, you figured you should have known something would happen. You had a condition that caused you to be infertile, but you were also the holder of a quirk that greatly affected your female body. A few quirk-based diseases ran in your family that affected the ability to reproduce, and if your quirk didn't stop you, it would have been the diseases that had been passed down.
At first, you were ecstatic to have finally been able to conceive — you and Keigo tried for a whole year before you tested positive, timing it perfectly with your ovulation stages. Everything seemed fine, too. The baby was healthy, you were healthy and happy, and Keigo stayed by and tended to you during your first trimester to ensure you didn't get stressed out. Even so, after all of that, you miscarried.
"Shh, shh," Keigo hushed, rubbing your back as the two of you sat against the wall. It had been over two weeks since the surgery to remove remaining tissues, since the miscarriage, but you were still absolutely distraught. "It's okay, it's fine. It's over. There was nothing we could do. All you can do now is recover. We can try again in the future."