Hello, my 2 year old son.. 11 kilos has pre anemia and just getting off a cold, has been taking antibiotics for 5 days, as long with decongestion medicine, tempra for fever(which he didnt have to take anymore) and iron supplements.. But the past 2 days he has had a high fever and has been in the fetal position as if he has stomache cramps or has been trying to poop and cant.. This only happens at night, in the morning he is active with high energy.. At daycare they say he poops and eats fine so i am not sure what the problem is.