Missing period but not sexually active?
Im 16 years old and a couple months ago my period just started to regulate to every month instead of every two months. When I was in gymnastics at 12 years old my period stopped completely and I had it seemingly every time I took a break from the sport. Now I'm in swimmimg practicing vigorously for two hours each day. I am not sexually active even though the head of my boyfriends penis once barely entered my vagina, but I gave him oral sex beforehand, for which he never ejaculated. I was supposed to start my period either today or tomorrow and normally I start a couple days before I'm supposed to menstrate according to my calendar. I usually spot a bit before I menstrate but this time I spotted for a couple days and then it just stopped. There have been no spotting or bleeding at all since then. Could my active sports be delaying my period again, or could I be pregnant?