Covid

So I have covid. This is day #4 for me and I’ve been sleeping a lot and the only issue I seem to have right now is my chest is congested with thick mucus. Just started drinking more water since I woke up but I need to figure out a way to loosen the mucus so I can get rid of it. Does anyone know of anything I can do being pregnant and all? I do not have a humidifier either so it makes it a bit more challenging. TIA