Hi dear, I have gone through your question and understand your concerns. Engorgement of breast and nausea can also be present in the premenstrual period or in other hormonal imbalance. If your urine pregnancy test is negative, then the pregnancy is ruled out. I will suggest you to wait for a week for the periods to come, if still they are absent, then you should get your hormonal profile done to confirm the diagnosis and get treated accordingly. Hope you found the answer helpful. Wishing you good health. Regards Dr Deepti Verma