I don't need a toddler that doesn't take a nap

Stupid coughing wakes Allyssa up from her naps these days. I am really sick of it. She only coughs during her nap and in the early morning before she wakes up. I am really sick and tired of it. I really want her to take a good nap like she was a week ago. Doesn't she know that she is about to have a brother and that I really need her to take a nap so that when he comes along she still naps!? It is really frustrating. I know that she is tired. One day she literally didn't take a nap at all. Another couple of days this week she's taken short naps. Does this have to do with her asthma or with the time change? I don't know, but I don't like it.