You should not be discriminated against because of your weight, but you may find you are classified as "high risk" depending on the guidelines your hospital has. This does not mean that you are high risk, more that you are not the lowest risk, and would possibly not be encouraged to give birth in a midwife unit, or have a waterbirth. Some hospitals encourage larger women to have an epidural in early labour as they can be harder to site in an emergency, and they might want to keep a closer eye on you for risk of diabetes.

Whatever they suggest at your appointment, remember you can ask for more details, ask for what the alternatives are, and make sure you are happy with advice before you agree to it. Find out if they have any specific policies what will affect you. Good luck!