kind of delivery she wanted to have. >> i would have opted for the nitrous had it been available. >> reporter: had rebecca delivered just one day later, on memorial day, she would have been able to opt for this, nitrous oxide or laughing gas during labor the. >> for women who want to experience a lot of the sensations of birth but want some help, it's a great option. >> the nitrous seemed very appealing because it is short term and something you can control versus an epidural which is, had lingering side effects. and you hoof to have -- and you have to have a catheter. >> reporter: one benefit to nitrous oxide, the gas is administered by the woman herself. >> when she feels the contraction is going to be starting. she puts it to her face and takes three to four deep breaths. >> reporter: women will usually feel the effects of laughing gas usually within 30 to 60 seconds, but it also only lasts for a few seconds. >> one of the things the women like, the degree of control it gives them over their pain relief. >> reporter: the laughing gas doesn't numb a woman from the waist down like an epidural.