My wife suffering from cough which is more in night.

You can consult the gynaecologist for medications
Ask her to have warm milk with turmeric.
Steaming too will help.
Ginger and tulsi tea too will be beneficial.

Try using karvol plus capsule and take the steam of it. And rat Ginger honey 3 times a day

As per communication here I share my wife ultra sound report

I have replied you please tell me do you see any bleeding or there is a lot of abdominal discomfort or pain in lower abdomen