helping couples conceive. mara schiavocampo has the details for us this morning. >> it's negative. >> reporter: turning the pregnancy struggle into baby joy -- >> we're pregnant. i have a child. >> reporter: -- is not always easy. enter the preg prep kit, a supplement available over the counter at cvs starting this month that might help millions of women get pregnant. dr. lara obler coming up with the idea during her battle for a baby. >> i knew i was healthy and there was nothing wrong with me. for some reason, i wasn't getting pregnant. >> reporter: teaming up with a group of ob/gyns to design a pill that may encourage pregnancy by making it easier for the sperm to reach the egg. >> a sperm swimming to an egg is analogous to a person swimming from l.a. to tahiti. >> reporter: the kit comes in two parts -- a daily multivitamin and a mucolytic to thin the. ♪ous, which women take leading up to their fertility window known to increase ovulation.