Help!!! i am late y?!

Help!!! i am late y?

i am late w/ my period 4 like 5 1/2 weeks?? y is this?? i skpped a whole month the last time i had it was may 23. y could this happen?? i need it 2 come because i want 2 c my friend and we r going 2 go 2 the beach and all and i dont want 2 b on my period at that time!!! so is there anyway 2 make it come faster or sooner?? and what preventing it??

2 weeks ago
i havn't has sex ppl i'm only 14 and i dont use tampons...i can never get them inside lol

2 weeks ago
ive had it 4 like 2 years? yeah this summer is my second year

how long have you had you your period? because for the first 2 or 3 years its normal for things like that to happen.