PAIN?

hey girls IDK what is happening. I am getting this pain like on my left side of my uterus (I THINK). Its kinda like cramps, It has just recently started. Maybe its my period? idk tho cuz I've never felt like this and its already been 3-4 days. I also had a pain that hurt when I walked and it was also down there, I am not sure if its my uterus or some shit. WHAT IF I HAVE SOMETHING, now im kinda scared