Carrie Ann
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        For the past three months I have not gotten a period.  I went to a clinic to get tested for STD's and pregnancy.  Fortunately, the tests came up negative. Here is my dilemma:  Last week, I had sex with my boyfriend and the condom broke.  Are my chances of getting pregnant lower than if I were on a regular menstrual cycle?