Hi Dr. Purushottam welcomes you to HCM virtual clinic! Thanks for consulting at my virtual clinic. I have carefully gone through your query, and I think I have understood your concern. I will try to address your medical concerns and would suggest you the best of the available treatment options. 1] Please do not panic. 2]If you have regular periods and you have missed your periods; and still your urine test is negative, then you are mostly not pregnant. 3] In this case it is just prolonged period. You can wait for the onset of periods or induce periods with Tab REGESTRONE 5mg 2 times a day for 5 days. 4] Also all your symptoms can be related to Premenstrual Syndrome- PMS. I will suggest indulging in a healthy diet and regular exercise regime. Include plenty of fruits, salads, vegetables in the diet. Have adequate water intake , say 8 – 10 glasses per day. Avoid deep fried foods, bakery products, and refined sugars.Avoid substance abuse, if any. Vitamin E, B LONG F, PRIMOSA one each at night for 3 months will be of help. I hope my answer helps you. Thanks. Wish you great health. Dr Purushottam S Neurgaonkar