 [ Symptoms ] hello i am an 18 year old cheerleader i have not seen my period since late october last year any advice  hello i am an 18 year old cheerleader i have not seen my period since late october last year since then i had protected sex once the condom didnt burst or anything and i took two pregnancy tests that came out negative also since october i had two serious falls on my back due to cheerleading and a chest infection i was given two different sets of medication for these incidents i am a bit worried as to why my period is so late any advice [ Disease ] i agree with the above advice however i would also recommend going to a doctor and checking for any internal damage from your falls i did cheer also and understand the risks and accidents that happen with the sport make sure when you took your pregnancy tests that they were taken correctly by this i mean that you waited the proper amount of time