A ticking time bomb. Every tick a precious second lost–not preserved in Snapchat or Instagram–the memory of it cached in a few brain cells before a new memory purged space for itself. Ellen, twenty-nine years old and ticking, kept a bright pink box, the First Response Rapid Results pregnancy test, in a cabinet behind the bathroom mirror. She already wasted one test on a false-alarm missed period. After peeing on the tip, feeling the warmth of a droplet of urine on her finger, she had stood watching the test for ten minutes while her husband, Wes, stood outside the locked door to the bathroom. No pink. Safe. Or not safe, she supposed. She and Wes had been trying for children for a few months now. You’re in the prime of fertility in your twenties, Ellen’s mother had…