Thanks for your query.
If your wife is having JUST plain yellow discharge, there is no emergency.
, some amount of discharge is perfectly normal.
If the discharge is accompanied by pain, cramps, feeling of pressure or dragging in the lower abdomen, or tightening of the uterus
, then you need to be worried about the possibility of preterm labour.
Also, if there is bad odour, vaginal itching
, pain etc, then the discharge could indicate a pelvic infection
, which can again lead to preterm labour.
In absence of any other complaints, you can wait till your next visit to the obstetrician when you could have a check up for the discharge.