so i havent had my period since the beginning of may. im 15 and im usually irregular but not this irragular. it might have happened before but im not sure it was this long because i didnt know the last date of my period. so any ways im scared to have to go get a vaginal check up..(if thats what it is) first of all : why could i be missing my period for so long(im a virgin)? 2: what do they do at the check ups? and 3: do they do it vaginally or a pelvic sonogram?? pleeze help me!