Assuming u r mensturating for less than 3 yrs it s alright to wait n watch but hiwever few basic tests lik hormone testing and a scan will help u stay reassured. Meet a doc wit a adult , probably ur mom n get further advice. However now, jus know tat ur condition is common n it is not at all a worrisome issue. Be a sport n talk it out wit ur mom

You're only 14years so we don't have to worry too much about it right now. However if it's bothering too much in the same way even after six months then you should do all investigations like scan and blood. Please discuss with your mother your problem and let her decide if she wants to take you to your doctor. Always confide in your mom first.