Congrats! You will do fine. A good friend of mine was in a similar situation. She had three kids raging in ages from 9-13. She married hubby #2 at age 39 and right away got unexpectedly pregnant. At first the kids were not happy. But now the baby is about 6 mos and let me tell you those kids *adore* their baby brother. And now the older kids are telling her that she needs to have 2 more babies so they can *each* have one of their own!