What Riku said. If anything, use this news as inspiration and motivation to get better. If not for your own sake, then for the babies. Bringing life into the world is an utterly wonderful thing, a true blessing. You deserve it and your baby deserves a fit, healthy and happy Mother. Life is a gift..I think we all forget that sometimes when we're seriously damaging our own.
If someone handed you a gift and you started throwing it about carelessly, on the edge of breaking it..well, that'd be just damn rude!