I understand how worrying it is when your little one isn't feeling well. Since her diarrhea has not stopped with Colimex, OFM suspension, and Econorm, and she has now developed a cold and cough, it is very important to have her evaluated by her pediatrician. Ongoing diarrhea may mean her current treatment needs to be adjusted, and her new symptoms should be professionally assessed to ensure she gets the right care. For now, please focus on keeping her hydrated with oral rehydration salts (ORS) and frequent sips of water. Please avoid starting any new over-the-counter cold medicines without consulting her doctor first. You are doing a wonderful job caring for her.