Hello, First of all, you should repeat the home pregnancy test or undergo blood test for beta-hCG to clear confusion about pregnancy. Early pregnancy test is NOT always give significant result. On NEGATIVE test, I can suggest progesterone pill to induce period if you don t get your period within next 1 week. Other reasons of irregular late period could be PCOD, hormonal imbalance, over wt/ extreme loss, mental stress, emotional upset, eating disorder, thyroid problem etc. You may need to undergo one USG lower abdomen and hormone test in the absence of pregnancy. Kindly, consult with your gynecologist and take advice accordingly. Cyclic hormonal pill is quite effective to treat irregular period. You should control body wt, avoid stress, take healthy low carbohydrate diet with avoidance of fatty food and sleep properly. Be well.