I am 19 weeks pregnant and having terrible aches and pains in my legs and sometimes arms. I have only gained about 8 lbs so it is not due to weight. I drink water through out the day, eat veggies, fruit, meat,etc. I am taking my vitamins. It all started about 6 weeks ago after sitting through a movie. When I got up I was cramping in my upper, inside part of my leg. The next day it was worse but in my whole leg. The next day it was in both legs. This lasted for about 4 days then cleared up. Then 2 days later it started again. My doctor said there was nothing he could do and didn't know why. It hurts so bad. There have been about 3 times that the pain has also been in my arms. It will last for about 3 or 4 days, in different parts of my legs, then clear up for a few days. They are not swollen or red. Does anyone have any idea what this could be?