My Name Is Kim , I Have Been Trying To

My Name is Kim , I have been trying to have a baby for over 4 years, I am going to be 40 in June. Recently I have been extremely tired , urinating more, heartburn and extremely sensitive, emotional , crying , stressed and always on edge , I am not due for my period for a couple of weeks and afraid to take a test because of the disappointment . Do you think I could be pregnant