J.K.
Don't know of a support group but I am sure if you talk to your doctor they can recommend something to help you. Don't get down on yourself for your disability. Many disabled parents care for their children and this doesn't sound too serious that you can't handle it. Ask for help when you need it- take care of yourself, get rest and relax so you will not get sick. If everyone waited until the time was perfect, perfect health, perfect marriage, perfect house, car, job, amount of money,etc.... there would be very few children in this world.
I 2nd Suz's comment about you sounding like a wonderful mom! And don't worry- the baby stage doesn't last forever and from your explaination your side effects will not either!
Hug that baby and thank God for her.