thank you for posting your query in healthcaremagic.com..... see first of all, talking to a doctor about anything is not awkward....but for proper diagnosis and treatment, you should tell your doctor everything... anyways, primary amenorrhea is said to be present when there is no periods and no secondary sexual character at age 13 or no periods but presence of secondary sexual character at age 15...so irrespective of your secondary characters like breast growth, pubic hair etc you are suffering from primary amenorrhea.... well there are various reasons behind primary amenorrhea, most common being genetic and uterine developmental defects... so in my opinion, you should definitely visit your GYNAECOLOGIST and he/she would run some tests like usg, laparoscopy or hysteroscopy and might be karyotyping also depending on your features...also definitely some hormonal studies also....it might not be very serious till now, so dont worry but visit your doctor immediately... hope this was helpful.... come back to me for further queries... regards