Need Help!!

Isabella
Okay so for almost 2 weeks now I've felt pains in my lower pelvic region and lower back. Even a little upper thigh somethings. 
I'm sexually active but always take my pill at my time ( maybe 30 minutes off max). And my bf never finishes.  My period isn't due for about a week or so. And these aches are staring to scare me... 
Could I possibly be pregnant?
Or what else could this be?
I've posted about this before but no one responded, i really need some answers