"Because iron from plant sources is less easily absorbed than the heme-bound iron of animal sources, vegetarians and vegans should have a somewhat higher total daily iron intake than those who eat meat, fish or poultry. Legumes and dark-green leafy vegetables like broccoli, kale and oriental greens are especially good sources of iron for vegetarians and vegans. However, spinach and Swiss chard contain oxalates which bind iron making it almost entirely unavailable for absorption. Iron from nonheme sources is more readily absorbed if consumed with foods that contain either heme-bound iron or vitamin C. This is due to a hypothesised "meat factor" which enhances iron absorption."
So an Iron supplement would be a good idea, maybe also look into a multivitamin. My sister's a vegetarian and has to take those since it's harder to absorb some of the vitamins with her diet.
Female 27 years old 4'11 tall
Start Date: 6-12-12 170 pounds
Goal Weight: 120 pounds by 06-1-13