Hi help me please

kammi

My son is one month old. Last night, I noticed something weird when he would cry. Like you know how your voice comes in and out when your sick or losing your voice? But not completely goes away? It just comes in and out? Well that’s what his cry is like. And is it because we don’t let him cry enough? Or too much? He only cries when he is hungry or needing a diaper change or fighting sleep. Honestly he doesn’t cry uncontrollably I mean he will have his moments. But anyway, the point is?, why is his cry like that? It just started last night? Is he getting sick?