Answer the question about text:

Today was not a good day . Marek hardly ate anything at all during the night and this morning , despite being hungry and waking every half hour - hour . I called cardiology and they recommended that I either see the pediatrician again today ( we saw him yesterday ) or go to emergency . Well , we could n't see him again today , so off to ER we went .

Why is the narrator not getting good sleep ?
Their child is sick .