I need some help

My girlfriend of 1.5 years started acting strange this week. Before hand she would call me about once a day and we would text throughout the day. She was also upbeat most of the time. This weekend and week it has gone a complete 180. Barely called me and texted me, when she did it was short sentence. She still text me that she loves me and stuff. The other thing is that she may be on a new birth control and all the other birth control she was on before would alter her mood and behavior. This past summer she was on mircogestin, which turn her into a different person. I feel this may be happening again, because shes is acting like what she was this past summer. The third part is that I am finishing up my last year at college and she is back at home 3 hours away. If anyone got advice I would gratefully love that thank you.

well i really dont know about this cuz i am in high school but it sounds like your girl is either seeing some one else or is planing something for you cuz when i was planing a supize for my bf i was acting weird too