During Marc Cherry’s wedding speech [he is the show's creator] he told the crowd that Eva can’t get pregnant for at least a year because it hasn’t been written into her character’s storyline. Just in case you didn’t know, Eva plays Gabrielle Solis, on Desperate Housewives.
Eva claims she is “fine” with the pregnancy ban.
“We’re fine with that. We want to spend some time with each other, even though we want kids very much.”