Welcome to HCM.
Your LMP was 2nd April and did pregnancy
test on 11th which was also negative.There is complete absence of period during pregnancy. If bleeding is present, then possibility of abortion
Do a USG lower abdomen to rule out underlying pathology or conception.
There are several reason of missed or delayed period like thyroid problem, psychological upset, stress, over wt or extreme loss, eating disorder
, ovarian cyst
Do some hormone tests like thyroid profile and LH/FSH.Then consult with your doctor with all test reports and take advice accordingly.
Take healthy diet, control body wt, avoid stress and need proper sleep.Also wear tight breast support to relief from breast problems.
Be well and practice safe sex to avoid unwanted pregnancy.