M.D.
E.,
i found out I was having twins at my firts doctors visit at 4 weeks. They did an internal ultrasound. The doctor told me that I would have more intense symptoms than a woman carrying a single child. He said I would probably have worse back pains, worse vericose veins, etc. and that it was likely that I would be on bed rest at some point. The thought of being on bed rest scared me so bad that it motivated to make my pregnancy great. I read lots of books got a yoga video for pregnant women. I ate often but really really healthy. I gained 40 pounds and my son was 7 lbs 4 oz and my daughter was 7 lbs 1 oz. I never felt better! It was truly an amazing experience. So, I think each person's experience is unique regardless of how many babies she is carrying. i think my attitude really helped the whole experience. However I would not discount another woman's experience if hers was not so positive. Good luck to you. Let us know if it is twins!
M.