She says she doesn't wanna take a test until she is a month late but I would like to know

Well, did you use some kind of protection, such as a condom? Without knowing such basic information, you will have to wait until she either has a period or does the pregnancy test. 

Ok, so if you don't believe in contraceptives I can assume you did not use them. 

My original statement stands: you will have to wait for her period or the results of a pregnancy test, either self administered or physician administered, to find out if you are going to be a dad. Best of luck!