Will I have my first period soon?

Odd question. If you are asking for yourself, you are long past needing a full evaluation for menstrual delay. If you are asking for someone else, please start over & provide the age and any signs of puberty for the kid in question.
U need an evaluation. Anna, if you have not had your menses beginning given your given age this may be a matter that requires an initial evaluation by your pcp, gyn, and possible an endocrinology consult.