Hello, Welcome to the forum. Sysron N is a Norethisterone which is a birth control pill, it is also given to treat endometriosis, menstrual disorders and to patients suffering from hormone dysfunctions. It should not be taken if you are pregnant, you should alert your doctor if you have blood clots, circulation problems, heart problems, etc on taking the medication. If you are not sure whether you are pregnant or not consult your gynecologist. You should be physically examined, per vaginal examination should be done to ensure if you have a bulky uterus. You can have an ultrasound done to confirm your pregnancy. You can repeat urine test for pregnancy after a couple of days. ( HCG is present in urine after the implantation of the foetus ) If urine test is negative implantation of the foetus has not yet taken place. ( concentration of HCG varies from individual to individual )Eat well, exercise, stay connected with your doctor. Have a nice day, take care.