I always have regular periods with pain, last two months my period was late by 8 days, when I consulted my gynecologist, she advised to perform blood test for Thyroid, HGB, but those were normal, also performed sonography of ovary and found one was bigger than other, so she advised to take Regestrone for 20 days, and to come within 4 days when my period will start. Now I am having severe abdomen pain and nausea feeling and little discharge continuously. Kindly help me understand about what actually happened here and is the Regestrone is working for me?