This is your second baby so chances are that area should be stretched a bit more even though it's been a few years. Also my friend is very petite and she had a 8lbs 13ounce baby and did just fine. Try not to worry. I think your labor would be worse if you are induced. I am not a big fan of induction even though I will have to be this time around so I can be off my blood thinner. I think woman who are induced tend to have a harder labor anyways. Remember our bodies are made to do this! Good Luck!