GIVE ME YOUR OPINION/ ADVICE ON MY GIRLFRIEND?

MY GIRLFRIEND WAS ON BC WHEN WE FIRST STARTED HAVING FOR ABOUT 6 MONTHS THEN SHE GOT OFF. WE CONTINUED TO HAVE AS IF SHE WAS ON AND 4 MONTHS WENT BY, THERE WER TIMES WE THOUGHT SHE WAS PREGNANT BECAUSE OF THE WAY HER STOMACH WAS LOOKING BUT SHE NEVER WAS, AND TO THIS DAY SHE STILL HASNT HAD A PERIOD, SHE'S BEEN OFF BC ALMOST 7 MONTHS NOW AND WE STARTED HAVING AGAIN ABOUT A MONTH AGO, IDK IF SHE'S PREGNANT OR WHAT IT IS, AT FIRST WHEN WE STARTED DOING IT A MONTH AGO SHE TOLD ME SHE WANTS TO HAVE A BABY AND WE DISCUSSED IT N SHE WOULD SAY IDK IF I AM OR NOT N THNGS LIKE THAT, N SHE WAS ALL LOVEY DOVEY WITH ME, NW SHE HAS CHANGED TWARDS ME, A WEEK AGO SHE WAS HAVING REAL BAD BK ACHES N SHE SAID SHE WAS PEEING ABNORMALLY, NOW SHE DOSENT EUNNA HAVE A CHILD, N SHE JUS DOSENT ACT LIKE SHE WAS JUST 2 WEEKS AGO, ITS LIKE A TOTAL DIFFERENT CHANGE 2WARDS ME SHE'S LIKE SHE JUS DK ABOUT US OR SUM N SHE SAYS SHE ISNT PREGNANT NW SHE WENT FROM SHE MAY BE TO NOW SHE'S NOT N SHE DOSENT WUNNA TAKE A PTESTCUZ SHE SAYS SHES NOT AND SHE HASNT EVN BEEN TESTED, ADVICE PLZ?