Anemia-PLEASE HELP

Im 21 weeks pregnant and just found out i have slight anemia. My hemoglobin and hemotocrit were a little low and my iron was low but still in the normal range. I also had a low red blood cell count. I am wondering if anyone else has been pregnant and had anemia and fixed it without taking supplements. I get very sick taking iron pills. I was thinking od trying the flinstones with iron chewables. Those have 18mg of iron in one. Would taking 2 a day be enough or no? What happens if i eat more iron but dont take any supplements. Is it really that dangerous?