coolant is getting over faster

[brady]

the coolant of my car is getting over faster then the usual as i check every after 2 weeks so i noticed it is getting less then half which us to be like a bit more the 3/4 fill

what should i be concern of

and yes no signs of overheating

[edwardb]

Check for leak under the car and inside the engine bay. If not bad news await you for that head gasket started leaking slowly and mixing coolant with engine oil.

Check engine oil, if it turn milky or close to it then yes it is head gasket started failing.